Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1f8d4fb4984bc8…

MALICIOUS

PDF

42.1 KB Created: 2020-08-03 12:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d591b67a5504602ee739ae1176a3d39 SHA-1: 692cd23c375e42f791950d723189ac8fe7615a1d SHA-256: 5a1f8d4fb4984bc8b854921907814eb8fdee1a2b5654144676c47b45961de53f
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. This URL is likely used to funnel victims to a phishing page or malware download. The document also contains a large number of external PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt to increase visibility. The presence of a 'download button' heuristic further supports the lure-based nature of this document.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=simple+biodata+pdf+download In PDF document text
    • http://files.hhhschoirs.com/uploads/1/3/2/6/132696171/toteditozoxop-sixujonutetitu-rufokabopu-goguvujibunibu.pdfIn PDF document text
    • http://files.paulaflinn.com/uploads/1/3/1/8/131871648/4108700.pdfIn PDF document text
    • http://files.penreviews.net/uploads/1/3/0/8/130815009/fewuturi.pdfIn PDF document text
    • http://files.colleenscoachingcorner.com/uploads/1/3/0/7/130740522/b746ed9.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/1/0435/7206/8520/files/funarapevuzivome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1769/1559/files/fetch_api_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72593533024.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jikoleluvotejagumali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0854/6200/files/a_implementation_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/josawewixog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/76699091874.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2541/6860/files/liwizafisevex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7356/7901/files/84213539443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5843/8056/files/mavojorot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6396/7906/files/tuzefan.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 8

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_off0000674a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x674A 5248 bytes
SHA-256: fd71cf26b490d2b0fac04be2653fa5a4b385728b66b68c215dd9ec057b674f0d
font_01_sfnt_off00007922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7922 10060 bytes
SHA-256: d6dffa8df7c2e23533186c96068c47d43f2f9546180e6531c5d12ce50c441413

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