Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d164d3a73b86a68…

MALICIOUS

PDF

38.2 KB Created: 2020-08-22 13:16:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bef818c832642e289eda3e44ef36c0b5 SHA-1: 3f0957bed7b2f7d5315df14b8f131d98aba7c5f7 SHA-256: 2d164d3a73b86a68030690bed7ddc4a2c6c057663ecdb135b61cb9570fab238a
214 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.ru', identified as a malicious redirector, which is part of a link farm strategy. The document body, though heavily corrupted, contains text suggesting a lure for downloading 'bejeweled 3 gratuit android'. The presence of numerous external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic. The primary malicious URL is https://ttraff.ru/pify?keyword=telecharger+bejeweled+3+gratuit+android, which likely leads to further malicious content.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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.ru/pify?keyword=telecharger+bejeweled+3+gratuit+android In PDF document text
    • http://files.hillsborofire.org/uploads/1/3/0/7/130776254/talavuteruz_tujudegovasok_loget_fuxidelige.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/1/0439/1141/3912/files/78895103101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/24610949908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/zavimufuduvaturabaxidowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8961/7311/files/ansys_act_acoustics_extension_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8729/7696/files/dimefenotino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/30713301859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3422/0456/files/dosabomuvolexet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2106/5640/files/decocraft_2_1._7_10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/camera_360_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0346/9221/files/latumimofujutotiteme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/45129099098.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_off000054c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C1 5444 bytes
SHA-256: f406e619b7a4e89ecd6e17307b89d0311bf30affc3923bd8c3353a33dc72c1c4
font_01_sfnt_off00006752.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6752 10852 bytes
SHA-256: 7a0668049f8c074aa4f562b4fb098bf612f38976d129fc5ee33ff86d4b8d1be4

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