Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f8e124ce2151c65…

MALICIOUS

PDF

40.1 KB Created: 2020-09-18 12:40:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d392f907d379085e5c658029525c1ee9 SHA-1: 5a54c076206be14ab4721fc3583cafde438aab16 SHA-256: 5f8e124ce2151c655e73c8120d1ad045c9d351f08b735b1113820231949bb69c
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, many of which appear to be part of an SEO link farm designed to obscure malicious intent. A critical heuristic identified links to known malicious redirector infrastructure, specifically 'https://ttraff.link/wix?keyword=snap+apk+downloader', which is likely used to deliver a secondary payload. The presence of a 'download button' lure further supports a phishing or malware distribution scenario.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ttraff.link/wix?keyword=snap+apk+downloader In PDF document text
    • http://files.bell-bottom-blues-btq.com/uploads/1/3/1/4/131454126/wopenutusenixuj.pdfIn PDF document text
    • http://files.rickloper.com/uploads/1/3/1/3/131383283/rusopejubiveruk.pdfIn PDF document text
    • http://jogidawev.tutorslink123.com/uploads/1/3/1/6/131637014/c6efb7a00d1da.pdfIn PDF document text
    • http://jutej.wanderingmusicians.com/uploads/1/3/1/4/131437158/7731768.pdfIn PDF document text
    • http://pirem.stjohnschurchclinton.org/uploads/1/3/1/6/131637432/bivuzarowekesefef.pdfIn PDF document text
    • http://luxogonum.risawilliams.com/uploads/1/3/1/3/131381225/jobugedetudo.pdfIn PDF document text
    • http://lufowup.goodshortstories.net/uploads/1/3/1/3/131380755/vuvaj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8907/5099/files/75659158930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/3947755754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9816/8743/files/mathematical_statistics_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3383/7219/files/ansible_commands_cheat_sheet.pdfIn PDF document text
    • https://7336b526-0718-4056-956f-140331bde883.filesusr.com/ugd/49be48_12d5d48fcf144f20a79f4a84ce55d76f.pdf?index=trueIn PDF document text
    • https://482774df-af73-4b9a-a8f0-08de4374c16d.filesusr.com/ugd/cf79db_37cdd17ede154e778ed2610c6c257061.pdf?index=trueIn PDF document text
    • https://70b615b2-bada-4c17-ac76-e83238b4d00f.filesusr.com/ugd/b916f4_020c3e218c104cc98eea50403990068b.pdf?index=trueIn 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 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 5032 bytes
SHA-256: 7d21636a1915671182b86875d60178ddab7ad23fe3f622fbd048fa7d51a744b9
font_01_sfnt_off00007098.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7098 10408 bytes
SHA-256: bbc2679f14ac8da84e2abeeeac8c1cb456dc3b8d2e5354974144b82b5e5d7cb9

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