Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94b4ef98250a2a2…

MALICIOUS

PDF

50.1 KB Created: 2020-08-23 03:50:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 052e0562ef9f339a8d550434088061a2 SHA-1: 75d5fc37d4f864caad52caa99ac152abb783c721 SHA-256: f94b4ef98250a2a2d032bf35d80aaee3213fba0e0c4669f7d81f979c5aa203b1
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. This URL is presented to the user as a guide for 'Left 4 Dead 2', a social engineering lure. The PDF also contains a large number of external links, many hosted on Shopify, which is indicative of a link farm used to improve SEO for malicious content. The document body, though heavily obfuscated, contains the malicious URL.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=left+4+dead+2+realism+expert+guide In PDF document text
    • http://files.avastrategy.com/uploads/1/3/2/7/132741110/zaxuxanajikitalezebe.pdfIn PDF document text
    • http://files.aleshahansonyoga.com/uploads/1/3/2/7/132741764/76382e35.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/1/0430/8510/3255/files/bigamabulevorumol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2202/4867/files/29852504447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5978/7414/files/cg_police_caf_waiting_list_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/6999/3123/files/gulag_archipelago_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4977/0395/files/10235047363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8299/8170/files/15511742742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/79997948602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6657/2441/files/87771253265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1119/4525/files/kexinewinopadogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/7979/8679/files/los_ojos_verdes_gustavo_adolfo_becquer.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 1

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_off000085f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F6 5592 bytes
SHA-256: 98fd6904f50f074cc71009503f6c74e20280bcf459752626f29d443efdceca2c
font_01_sfnt_off000098f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98F8 10104 bytes
SHA-256: 12ecc624646247309a5f0f77cf7d214f3f3166de363aa4bcd4adb8314f606677

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