Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5c4e6b4f3e501ec…

MALICIOUS

PDF

42.6 KB Created: 2020-08-10 04:33:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 292927a015cd81210219645e23ee2c05 SHA-1: fff8fee92a03df411c7b035f0aa24546c284e9a0 SHA-256: f5c4e6b4f3e501ecd7dda370e0cd3273cc3bfd4967d57734f98b759a2d973e56
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a worksheet. The primary malicious URL identified is ttraff.cc, which redirects to a page related to 'analogies worksheet with answer key pdf'. This suggests a phishing or scam 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=analogies+worksheet+with+answer+key+pdf In PDF document text
    • http://puxifed.drbriancasteels.com/uploads/1/3/0/8/130874493/7041148.pdfIn PDF document text
    • http://govuti.stileutile.com/uploads/1/3/1/4/131483254/geraxax-fiweturut.pdfIn PDF document text
    • http://gagase.mikeyosk.com/uploads/1/3/1/4/131482975/mulaloten-bagas-davikinire.pdfIn PDF document text
    • http://jowopa.coachmo.net/uploads/1/3/0/9/130969742/4699521.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/1/0437/3184/5271/files/dumopenadunaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4816/3733/files/zikijabolopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4955/7917/files/learn_traditional_chinese_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7762/3194/files/43694733319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/17871708579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/sawase.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4062/8133/files/convert_to_a_fillable_form_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/berserk_manga_mega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5934/7618/files/wofafexusuvuku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/tewuzopim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/72601104091.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32773531818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/temebesatadoju.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 2

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_off00006734.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6734 5552 bytes
SHA-256: 09a6beb01eff71cf335f6e0cca831f3c92be2819d331b2b646a086409a64fc69
font_01_sfnt_off00007a2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2B 10132 bytes
SHA-256: 7af3cf089bf3200e2761142dfd35279bc7083221a1cd5cb2e5b1ab1746bc021c

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