Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f2cb1520df1c837…

MALICIOUS

PDF

54.9 KB Created: 2020-07-29 17:51:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7625925217ee8ab1eed6833ef6bbb7e4 SHA-1: 885091cb73f6e294647d6c7c14ad99796df0d41c SHA-256: 8f2cb1520df1c837ff74814fc0dfc06f0529f1006bb4a142cbc85cb734490b00
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a significant portion pointing to a link farm hosted on Shopify. One critical heuristic firing indicates that a link redirects to known malicious infrastructure via 'ttraff.cc'. The document body, though heavily obfuscated, contains text suggesting it is a lure for '6th grade reading comprehension pdf'. The combination of a link farm and a malicious redirector strongly suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.cc/pify?keyword=6th+grade+reading+comprehension+pdf In PDF document text
    • http://files.audreylewisinteriors.com/uploads/1/3/1/3/131398174/veman-papaduve.pdfIn PDF document text
    • http://files.enterthemovies.com/uploads/1/3/0/7/130739069/f03ae470.pdfIn PDF document text
    • http://files.danceswithdogstc.com/uploads/1/3/1/4/131483336/rilare_tenaz_mulojukaved_jevevovonesomad.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/1/0428/8072/9251/files/fepunavotikaxikepefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/83763666650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/75318610740.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/zokugizetofilubebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gadawatozuwagujezudoru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/21731274701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0896/6307/files/77804666005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/kawoxiziti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7399/4905/files/kewivifaxofabizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4951/7205/files/18874178471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/natagip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4147/9066/files/bonigenigezu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5453/0709/files/66004668786.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1293/8152/files/50897350195.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 5

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_off000099f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99F8 5384 bytes
SHA-256: 2b0c1e3eeaf510921bb8804213d351161e9a356dde45d85f8a283411d5060ad7
font_01_sfnt_off0000ac0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC0D 10088 bytes
SHA-256: b9be2f9e1bc1012f8d3b762d3c6115cdba9b84aa2625694c7e2f1d7327d6a431

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