Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc716b4cfd977259…

MALICIOUS

PDF

41.2 KB Created: 2020-07-29 16:56:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e340145d0927806c75df6f9f1f6433db SHA-1: f7fe75147c09099fb63732b3a9a4a1bad3508307 SHA-256: fc716b4cfd977259e3df109c060c45f2316701982e6b15b02dca66f61cb0939c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded links, many of which point to Shopify domains. The document body, though heavily obfuscated, suggests a lure related to 'Biology gcse revision notes pdf'. The primary attack vector appears to be social engineering via a deceptive link within the 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.com/pify?keyword=biology+gcse+revision+notes+pdf In PDF document text
    • http://files.greekelearning.com/uploads/1/3/1/3/131380627/lutazuzogewiles-vulumituxu.pdfIn PDF document text
    • http://files.icater2youtravel.com/uploads/1/3/0/7/130739986/saninaja_dikesudes.pdfIn PDF document text
    • http://files.otakulifestyle.net/uploads/1/3/1/6/131637853/b18e4ceb0.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/1/0438/9902/7611/files/52913259461.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/9158575604.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31056735454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1086/7871/files/vilojolosofimisojafut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7794/9848/files/ruxekivavolivabafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/povedepewavuzigiximatetek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1042/4993/files/witekujapuzusogunuseziz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/vomegokoxikizoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4570/7166/files/45865872550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8283/2280/files/47950481956.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6580/2905/files/juzokadofolirazuxekope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1054/6071/files/97065911026.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 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_off00006336.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6336 5112 bytes
SHA-256: 3ac5f67ffff290110de71b457668ab7017d7bffcd83d6429fc0b767df7b86131
font_01_sfnt_off000074b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74B3 10336 bytes
SHA-256: c6217f85ab4906e4f200db1d3796833ba116fc3a7f75cd71f4243bdd24965dd6

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