Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa570852a35dd613…

MALICIOUS

PDF

43.9 KB Created: 2020-08-07 22:00:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e249f90bb972ba298cceacc2f8d921ab SHA-1: 2a73ab43215258ee54f456f2987991da8de42d43 SHA-256: aa570852a35dd613878d18f8d77d5b98ddf39d26931874cf0fd9f5a5eb89619a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and a related Shopify URL, suggesting a lure to a malicious site. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves redirecting the user to malicious infrastructure via a deceptive link.

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=breast+cancer+review+article+pdf In PDF document text
    • http://files.adelaide-brushfencing.com.au/uploads/1/3/2/7/132712266/8137849.pdfIn PDF document text
    • http://files.tubitospizza.com/uploads/1/3/0/7/130740297/22f24.pdfIn PDF document text
    • http://files.yew360.com/uploads/1/3/2/8/132814343/a5750ccf348b9.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/1/0430/6694/9786/files/93537643690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/wejulewizawamuwewibadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/vejuwebopipizibiwofev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5027/0869/files/vujakakirijasapolamife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8320/9631/files/wawugedikobovogexoduna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/1676/8923/files/313_b_meet_the_beat_alls_trilulilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6504/8214/files/python_split_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/janavuraxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/pivabafunaliretudapon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/27786624322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/97746905047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8066/3705/files/teacher_peer_evaluation_form.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E84 5352 bytes
SHA-256: c318fb0fcd61ee69bfaaa93f4b9fd84c100c6d7cc7d31f5145592d5410992a93
font_01_sfnt_off000080dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DD 9920 bytes
SHA-256: c3c47751386c23273affbbd7e3a4f6982c3e3ca5375113b95dff0ee205ffe4c5

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