Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0959bf8cbf62781…

MALICIOUS

PDF

92.1 KB Created: 2021-03-14 06:25:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 07a2b402e9bb4eab03dd2a4d910b421d SHA-1: b25b7e3ac8d825721b3bf57401af1c7a86544061 SHA-256: b0959bf8cbf627815f116df2894e132ef7ebd7f7a426b14591885172c9c9483a
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a high-severity rule indicating an image lure linking to an SEO redirector for phishing. The ML classifier and ClamAV also strongly indicated maliciousness. The primary IOC is the redirector URL, which is likely used to host a phishing page or download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=beautiful+accident+movie PDF link annotation
    • http://xutefizil.getenjoyment.net/matexivudazilavufesiguboj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466151/normal_6010b2c9a4785.pdfIn PDF document text
    • http://mateguwokalidub.getenjoyment.net/45606210802.pdfIn PDF document text
    • http://tesevamomavuruf.22web.org/how_old_was_the_cast_of_vampire_diaries_in_season_1.pdfIn PDF document text
    • http://vizenam.medianewsonline.com/33757152603.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468571/normal_5ffcafb0e8e27.pdfIn PDF document text
    • http://dinewegivogofe.mygamesonline.org/11637920196.pdfIn PDF document text
    • http://jekefidaz.mygamesonline.org/kalefidewuxozibor.pdfIn PDF document text
    • http://kiritisivasol.mywebcommunity.org/92126717712.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rinivuwuvo.epizy.com/garaz.pdfIn PDF document text
    • http://lusuzajemofim.rf.gd/examples_of_car_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/metubevozisul/d_d_5e_character_sheet_fillable_word.pdfIn PDF document text
    • http://xufazep.epizy.com/fapajofunowumix.pdfIn PDF document text
    • http://newemepakirid.myartsonline.com/oxford_bible_commentary.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/48256745961.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/63140903586.pdfIn PDF document text
    • http://tizexazebubo.atwebpages.com/how_to_wire_a_rheem_electric_water_heater.pdfIn PDF document text
    • http://gaderaxanaru.epizy.com/vesifafopunuxekizid.pdfIn PDF document text
    • http://fasasipapuzu.rf.gd/watchmen_full_comic.pdfIn PDF document text
    • http://bikaduwixunu.epizy.com/wojodewajobipaje.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/nujubu.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/safety_data_sheet_for_gasoline.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E38 2880 bytes
SHA-256: b90b109c34db9b2d961be312c0c64f13ba4f5af9c83d6ae4556a72cb7f468167
font_01_sfnt_off00012876.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12876 5000 bytes
SHA-256: 53b2b788c33f94ec9adb761bd1a727a4b0125f30100ac90b4550505a94f8b1cf
font_02_sfnt_off00013979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13979 12816 bytes
SHA-256: be1f15dded9d43dd78958dcc4209f854752a8b0c2e0f3bcfeabccb459cced688

Open this report in the interactive analyzer, or submit your own file for analysis.