Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7da91958c83d317…

MALICIOUS

PDF

126.7 KB Created: 2021-04-06 00:13:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a431b0dd1afcb0db382c2796c9576c4 SHA-1: c3f1d069206867235fd6ddb71875b2797dd629bc SHA-256: f7da91958c83d3175f288cd4b3882d09cb3a1ad1246c630fd1d142871e2746e0
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to Weebly-hosted PDFs, indicative of a link farm or SEO spam campaign. The heuristic 'PDF_SEO_LINK_FARM' specifically identifies this pattern, suggesting the document's primary purpose is to redirect users to potentially malicious or phishing sites. The ML classifier and ClamAV detection strongly support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://bologen.ru/award?keyword=analysis+sentence+starters+pdf PDF link annotation
    • https://komamizidunip.weebly.com/uploads/1/3/1/4/131437982/vuwifobox_minawejubalof_xumiramovo_sonagu.pdfIn PDF document text
    • https://lurexiji.weebly.com/uploads/1/3/4/5/134594132/5ccae3483d65ea.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/terjemah_lirik_lagu_seven_years_old.pdfIn PDF document text
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/ba56f.pdfIn PDF document text
    • https://fagutefoxod.weebly.com/uploads/1/3/4/2/134235025/gibewapifalono.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/lomedinu.pdfIn PDF document text
    • https://kutakikojog.weebly.com/uploads/1/3/4/6/134688668/mokemujen_gisizinuror_masoteromuvanow_tinales.pdfIn PDF document text
    • https://xunijududivajol.weebly.com/uploads/1/3/0/9/130969830/rusolizitonatelapad.pdfIn PDF document text
    • https://jowopuvuramikir.weebly.com/uploads/1/3/5/3/135313070/1faea26ff1d63.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/fate_grand_order_heracles_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/how_to_unlock_lock_screen.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/how_do_you_make_homemade_pizza_crust_crispy.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/how_to_type_while_making_a_tiktok.pdfIn PDF document text
    • https://bisetegu.weebly.com/uploads/1/3/4/5/134528498/jifigoxeluzazupifavi.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/www_wapking_com_video_song.pdfIn PDF document text
    • https://zowololo.weebly.com/uploads/1/3/5/2/135294949/f815c4ca5a6c7f.pdfIn PDF document text
    • https://befapoge.weebly.com/uploads/1/3/1/6/131637854/7352318.pdfIn PDF document text
    • https://popakute.weebly.com/uploads/1/3/4/8/134863009/bufinudasipem.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/30112785960.pdfIn PDF document text
    • https://xatefokagakutil.weebly.com/uploads/1/3/4/1/134108848/wujanevoxexagu_mipuvolusod_ligetam_munivowove.pdfIn PDF document text
    • https://salabupomisopef.weebly.com/uploads/1/3/4/6/134631393/20a3cb.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/65742491959.pdfIn PDF document text
    • https://senaduwofajix.weebly.com/uploads/1/3/0/7/130775021/puwegofewukelul-josukotesed.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/86535220454.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1443accd-138d-422a-bf8c-efb20cbc9f6f/does_lock_pick_gun_work.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f7d9584-6099-4fd7-8cf1-582ab5a6439a/35274310565.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fbc5f34-cfe8-4758-9370-0c60a1f0542b/sunbeam_mixmaster_replacement_parts.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00019ca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19CA2 5240 bytes
SHA-256: 06959af431462eb2907e9ccc3b05610116a95d75b2fdd47bce0e0a49accda840
font_01_sfnt_off0001ae94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AE94 11860 bytes
SHA-256: c991a71d53ff83ff772461b16e464d507ec6c87544777cbff101154b19775daa
font_02_sfnt_off0001d72d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D72D 16164 bytes
SHA-256: 0646a63a478fe53468b8dbbe05b608d617a04836cde27f490c8d0ce00ae8a9f2