Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb7ca2eb218342b…

MALICIOUS

PDF

50.7 KB Created: 2020-08-12 22:24:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d6d1d561c52575e77877ecc2a7f935d9 SHA-1: 7b97bc736350334db63ef97cadffdfd5fd79c733 SHA-256: 3cb7ca2eb218342b839750e7c4bd98b5344c03c194a5aa030ed3b8acffd410db
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs, likely as a SEO spam or link-building tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=burger+and+lobster+nyc+menu+pdf', indicating a probable phishing or malware distribution attempt. The ML classifier strongly supports the malicious nature of this PDF.

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=burger+and+lobster+nyc+menu+pdf In PDF document text
    • http://files.polishheritage.org/uploads/1/3/2/7/132740515/rokavezu-pemajivuz-fetutodi-dudevanu.pdfIn PDF document text
    • http://files.betsierivervet.com/uploads/1/3/1/4/131453415/9450956.pdfIn PDF document text
    • http://files.saenz-lab.com/uploads/1/3/2/6/132695646/bipip.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/1/0428/9839/1196/files/52961677789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2831/5293/files/ligetetodamix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1751/9772/files/sudukuziwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7291/files/maziwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/99660796058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/advanced_java_programs_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/bm_sharma_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/dolamaviti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7245/3797/files/13877488984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9003/2278/files/all_star_superman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6113/2962/files/45617919771.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 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5A 5600 bytes
SHA-256: 3fdeb317b14db3e179c19768da6fec4449124a46a7cfacc9af726b0d91209c9c
font_01_sfnt_off00008d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D4E 10140 bytes
SHA-256: aeb6938091092405e8b6334e35ee6739c74e74790452aff0083f47d4f0812b12
font_02_sfnt_off0000b00e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB00E 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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