Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f77fe685e10083f…

MALICIOUS

PDF

57.7 KB Created: 2020-07-30 09:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6b4aceb35e20a1d79e6955b656f377a9 SHA-1: 0b702f918f5f653f7862003571752637b9078b53 SHA-256: 8f77fe685e10083fcb12601592d4b83e6757de81ea0e87d394c3894c45c53f76
194 Risk Score

Malware Insights

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

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.cc'. The document body, though heavily obfuscated, suggests a lure related to the 'Socrates method' to entice users to click on these links. The presence of a link farm and a redirector indicates an attempt to drive traffic to malicious infrastructure.

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=socrates+method+pdf In PDF document text
    • http://files.realtygal.net/uploads/1/3/2/6/132695492/xunovino.pdfIn PDF document text
    • http://files.saltdancecompany.com/uploads/1/3/1/4/131438641/494423.pdfIn PDF document text
    • http://files.cambriacountycampcadet.org/uploads/1/3/0/7/130775223/1873094.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/1/0432/8806/8254/files/30839678638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8006/4936/files/41296447719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6302/5567/files/54525995784.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4399/3238/files/dezetapisanuvarekuborup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2388/2664/files/1319708930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1887/7090/files/49255767895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3266/4481/files/wuwamamono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5992/9503/files/99779387756.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1796/9570/files/badosom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6453/9798/files/palumodoxitopumafejotak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3494/3388/files/40966086868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5394/8836/files/33207470772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3175/5932/files/wejepadoxofab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1900/9173/files/47796584428.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 6

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_off0000a2db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2DB 5100 bytes
SHA-256: d9eede597951e976fb3927309b5a79370cb740128ebac98c128230175955a309
font_01_sfnt_off0000b41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 11312 bytes
SHA-256: df8c4796f36c814a8cdb1a292364ca4d56a044ee91182986baebda31323dab5f

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