Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7ae8f9c1397a7fe…

MALICIOUS

PDF

37.9 KB Created: 2020-08-24 04:05:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b9e0a67c9347c0bc14c968b6e6152576 SHA-1: 6d8268f4b6320268dab018a7ce525547f021644a SHA-256: c7ae8f9c1397a7feab35698fc84f679bef547f002b116c290a0093a92ae60824
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to deliver further malicious content. The document body, though heavily obfuscated, contains the target URL and other embedded URLs, suggesting a phishing or social engineering lure. The presence of numerous external PDF links also indicates a link farm, a common tactic for SEO poisoning and driving traffic to malicious sites.

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=balance+sheet+in+accounting+ppt In PDF document text
    • http://files.teacherdallas.com/uploads/1/3/0/7/130776327/3257808.pdfIn PDF document text
    • http://duwikiv.leanagainstmyheart.com/uploads/1/3/0/8/130873951/wupamizisexe.pdfIn PDF document text
    • http://files.kirkmarlenespain.com/uploads/1/3/0/7/130740298/5564514.pdfIn PDF document text
    • http://files.gpvaniermusic.com/uploads/1/3/1/0/131070317/doletube.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/1/0439/8029/2254/files/sampooran_chaupai_sahib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0416/5276/files/91207932967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/reliance_company_introduction.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/4892/2270/files/candomble_de_angola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/melokozukidorizagonosek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5687/4151/files/wiwomuxedileniwaganidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/gedevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/4705/3470/files/calligraphy_guide_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5965/files/6268843630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/59418968983.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_off0000573d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x573D 5148 bytes
SHA-256: 3c9163ef92bb6955a106cfdf0679c0d0024aa0d5bc7ca91ad4c98aee5a123832
font_01_sfnt_off000068b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68B9 10072 bytes
SHA-256: c4072a5da574292da9dd2ee584e88729cbbc13a0713220f46da5b8d0d312a27c

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