Malicious PDF — malware analysis report

Static analysis result for SHA-256 a135993e69e4206a…

MALICIOUS

PDF

45.4 KB Created: 2020-07-30 14:41:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8486456d87bba6d193ec3060a6512382 SHA-1: e8fb27aae154510d5f15f6d1a82d4240efb7ad96 SHA-256: a135993e69e4206ab728baf614643524f533509f361bfd72b6b671e88d2a1b2e
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to manipulate search engine results. The embedded URL 'https://ttraff.cc/pify?keyword=carb+cycling+guide+pdf' is the primary indicator of malicious intent, likely serving as a lure to a more harmful destination.

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=carb+cycling+guide+pdf In PDF document text
    • http://files.mulvehillhomeinspections.com/uploads/1/3/0/7/130739991/151985.pdfIn PDF document text
    • http://files.jeffmacauley.com/uploads/1/3/1/8/131856664/b61ec4c3c3857a.pdfIn PDF document text
    • http://files.mtpaintersalliance.org/uploads/1/3/0/7/130738943/tusapixomomofaladeg.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/1/0439/0112/4760/files/37182716052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4637/files/tutinitaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/giworubaxewur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0177/4233/files/ferep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/wimuxakudiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/jatutalojunilafaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7508/3171/files/24885002872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7867/1779/files/kapokol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/51198548577.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7287/0807/files/52121064773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7920/5013/files/14013860803.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 5

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_off0000746e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 5100 bytes
SHA-256: 3709cf9c9ab6f912287244331a9307e27f3442c25e25d3d665faffe672ceeee2
font_01_sfnt_off000085d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85D6 10280 bytes
SHA-256: f2be42cd9da349bfe0e0a2cbf9749e271e714640612682de9330bf3f7a21275c

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