Malicious PDF — malware analysis report

Static analysis result for SHA-256 39576b4728c6b42e…

MALICIOUS

PDF

114.4 KB Created: 2021-03-15 08:17:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da38ab73337ef882bcd211c41d831a57 SHA-1: 707875df51b09118bc5c29fda9590268a5cf7c52 SHA-256: 39576b4728c6b42e94ea192f6df9bcc5109adc3b9f235d74c3ade66a37d2cce3
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, many of which point to SEO-optimized redirectors and potentially malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text related to 'locomotor skills meaning in hindi' and application names, suggesting a lure to disguise the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9841

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/wix?keyword=locomotor+skills+meaning+in+hindi PDF link annotation
    • https://s3.amazonaws.com/tapelu/life_after_mod_apk_offline.pdfIn PDF document text
    • http://faketikus.22web.org/video_er_extension_for_uc_browser_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/bolton_analysis_orthodontics.pdfIn PDF document text
    • http://nizorunux.iblogger.org/89776476144.pdfIn PDF document text
    • http://kibizife.iblogger.org/jeffrey_sachs_the_end_of_poverty.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/burger_king_application.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/vonetugesifiz.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/plataforma_20_aula_digital.pdfIn PDF document text
    • https://tegomufowake.weebly.com/uploads/1/3/5/9/135958876/c075d6df.pdfIn PDF document text
    • http://pidukefap.22web.org/monopano.pdfIn PDF document text
    • https://jidupedepinamup.weebly.com/uploads/1/3/2/6/132680921/3f6a786ac421.pdfIn PDF document text
    • http://vobalemujumojak.mywebcommunity.org/tudevesijevaxobibuda.pdfIn PDF document text
    • http://modozadubop.mywebcommunity.org/taotao_50cc_scooter_maintenance.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/what_kind_of_oil_does_a_2008_scion_xb_take.pdfIn PDF document text
    • https://xixekelubijaruj.weebly.com/uploads/1/3/5/3/135329585/425928.pdfIn PDF document text
    • https://toxovapuwelubu.weebly.com/uploads/1/3/4/7/134733969/95931.pdfIn PDF document text
    • https://kuvezuwuziteb.weebly.com/uploads/1/3/4/3/134388010/c2f5d49.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://porujikegen.epizy.com/49562339660.pdfIn PDF document text
    • http://jamujufumazuwir.rf.gd/fugejejeloxejomonakax.pdfIn PDF document text
    • http://zoxarulal.rf.gd/how_to_use_an_oven_for_baking_a_cake.pdfIn PDF document text
    • http://kifozelig.epizy.com/xudawijozijozubijaga.pdfIn PDF document text
    • http://megugasawixige.onlinewebshop.net/purolabuwifaloneba.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 9

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_009_off000172d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x172D0 18824 bytes
SHA-256: 353733f804a2e2558274fa186276e52a0ba66394adb83a5c8027ac727b3d885c
font_00_sfnt_off0000e93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE93C 6376 bytes
SHA-256: 6e81f897d36290b1436dbc4eba27d2803d840529695d98761a555db702fee011
font_01_sfnt_off0000ff39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF39 5360 bytes
SHA-256: 9bcfbcc6266dceb56cf7b398914dcd3a0a140783a83ecdb2522a15f036e59184
font_02_sfnt_off00011145.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11145 2656 bytes
SHA-256: c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde
font_03_sfnt_off00011c4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C4B 2328 bytes
SHA-256: 3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f
font_04_sfnt_off00012702.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12702 2108 bytes
SHA-256: e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97
font_05_sfnt_off000130ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130CE 6640 bytes
SHA-256: eca62b72654736461a635ba366d09d794777fd95c58152d2b251becdfce657e0
font_06_sfnt_off0001426b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1426B 15800 bytes
SHA-256: 17c906deb1edab8cfae297b91f44bbf159bbb1b3b99b5ecd120b80e645621827
font_08_sfnt_off0001916e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1916E 12080 bytes
SHA-256: 548c613b30233b360f9b719e5a792b831a4bf61b9df2becdc9ae8b710ebbd643