Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70639f84330821b…

MALICIOUS

PDF

40.4 KB Created: 2020-08-07 19:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c13310f44f94631d0031ea61b915ddde SHA-1: 34298c9e9ede4a1d15b8d18846f2ef29296be874 SHA-256: b70639f84330821b9391058021ba78f7503c5af677fd5369e93407504f654b7e
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.cc'. This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=co+branding+guidelines+pdf', reinforcing the malicious redirector finding. The ML classifier also strongly indicated maliciousness.

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=co+branding+guidelines+pdf In PDF document text
    • http://files.themadbarron.com/uploads/1/3/0/7/130775728/wotawanuwipe-nolorozaf-gegelo-tapisawa.pdfIn PDF document text
    • http://files.montellotastingroom.com/uploads/1/3/0/8/130874457/fulikalijagotug.pdfIn PDF document text
    • http://files.moyo-up.de/uploads/1/3/1/0/131070367/114237.pdfIn PDF document text
    • http://rajep.elkhornvalleydistrict.org/uploads/1/3/2/8/132816202/sijokumo.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/1/0432/3901/4562/files/duck_life_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15636630427.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2602/1527/files/mobonazibozup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/snowball_warren_buffett.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/49525022928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1076/6486/files/alternating_current_circuits_by_ky_tang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4447/0945/files/11228270549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4190/5057/files/eager_beaver_2._0_chainsaw_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9617/8849/files/45833504178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/55953353493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0568/9504/files/8593566137.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 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_off0000616b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616B 5256 bytes
SHA-256: 561ed16b3aa581462deed18966367d104d097a41e278cae921f278dbab9c9c3f
font_01_sfnt_off0000734c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x734C 9892 bytes
SHA-256: 18834331cb56e5de68f8797994e9ca1ee905d42d94d04b84784bb5a7fb8a3073

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