Malicious PDF — malware analysis report

Static analysis result for SHA-256 31563491a7998443…

MALICIOUS

PDF

38.8 KB Created: 2020-08-08 06:48:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0b5232af82cc23b918dc3d865bd6062 SHA-1: fda0acedc133a415a050c8f5dbad70130e4fa4e7 SHA-256: 31563491a79984438af76c2c427897a2fdffea5c2c02407f75053bffe8a66da2
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector at https://ttraff.com/pify?keyword=hul+annual+report+2020+19+pdf. The document body, though partially corrupted, suggests a lure related to an 'annual report'. The presence of a link farm further supports a malicious intent, likely for phishing or malware distribution.

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=hul+annual+report+2020+19+pdf In PDF document text
    • http://files.aittransmission.com/uploads/1/3/0/8/130814297/22eb089db.pdfIn PDF document text
    • http://xixuje.purposeqi.com/uploads/1/3/2/6/132681946/5755080.pdfIn PDF document text
    • http://wodufe.riccio-builders.com/uploads/1/3/1/6/131637881/zanilovu_kasiziwafe.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/1/0433/0687/7080/files/9959313526.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/715354898.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5840/5271/files/43735004914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4015/2479/files/lusiti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4457/7178/files/revamixivugasinez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3581/9173/files/43107990233.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/dadekisopoke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/redejudijux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0743/3125/files/madvillain_all_caps.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6974/2999/files/78924681533.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/engineering_economy_16th_edition_solution_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19227598733.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
🗂 Part of campaign: danieleheon.com 6 samples

Related samples 3

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_off000059d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59D3 5300 bytes
SHA-256: bd6dc752dae7b1affccb179e239f884e51621441468d1ae31348e0a0d8a1d1f4
font_01_sfnt_off00006be6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE6 9968 bytes
SHA-256: f2926c0e99bcb1ff305510ee569667861f127952255500aa6b7d1e2bd7edf4bc

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