Malicious PDF — malware analysis report

Static analysis result for SHA-256 3491aa0b78ca4301…

MALICIOUS

PDF

48.3 KB Created: 2020-08-09 22:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 88cb96feed36dbc64b891d548c271ac4 SHA-1: 2bfe8017811d2a4c1867e5bf099502894d97e2cf SHA-256: 3491aa0b78ca4301c1ff8dc24b1f20640a1876e7d1ef282e5f773b31a27703e7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link to a known malicious redirector, ttraff.com, which is disguised with a keyword related to educational materials. The document also features a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The primary malicious link is https://ttraff.com/pify?keyword=70+question+bubble+answer+sheet+pdf, which likely leads to a further malicious destination.

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.com/pify?keyword=70+question+bubble+answer+sheet+pdf In PDF document text
    • http://files.mannahomesne.com/uploads/1/3/1/3/131383297/wenilem_bumilejabo_furotuje_gokakaxumezuz.pdfIn PDF document text
    • http://tatira.theyogaterminal.co.uk/uploads/1/3/1/4/131453870/0f1eeb.pdfIn PDF document text
    • http://pivirig.aimeeswenson.net/uploads/1/3/0/9/130969472/3963824.pdfIn PDF document text
    • http://files.iamuinformer.org/uploads/1/3/1/4/131453198/cf1a7b941.pdfIn PDF document text
    • http://moxifoluw.tomballmemorialcheer.com/uploads/1/3/1/0/131070722/6d8c89d8a2ccc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5169/6796/files/mathematical_symbols_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9349/0838/files/can_t_find_header_files_for_ruby.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4343/8242/files/50358208848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/sapukejenodezevugotonuma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8720/0418/files/javascript_order_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/excuse_me_kevin_gates_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5997/9174/files/sotovimegunusopusanep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/29550225724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5817/3854/files/lunejuxovexavega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9611/9198/files/68191354667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7847/5162/files/fajagejodux.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000578e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x578E 5496 bytes
SHA-256: fd7f77da20cd1c6244178e94eb93bf472c90d2311f4ed62f46a57cbcd9f7631d
font_01_sfnt_off00006a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A30 11268 bytes
SHA-256: 9e2707f35c5cc44b6556b8586df73b150d618c101e0f858db2c28ecb25358907
font_02_sfnt_off00009091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9091 16160 bytes
SHA-256: 9ffc405fbed68b1ed35cf25504b2a045b5802e2074cf99e6920a228075e829fc
font_03_sfnt_off0000a597.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA597 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2