Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7f0f7877240dfed…

MALICIOUS

PDF

34.5 KB Created: 2020-08-18 23:03:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ab972ce2d73e8bdc3db298d27ca93126 SHA-1: b55186f06429e18fc8630e249d0b7b43228ba217 SHA-256: a7f0f7877240dfedf30c5a58f4adab195a72ffeb3e6703b73fe7fc3ffed5c64f
194 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a 'sc1 self certification sickness form printable'. This link, https://ttraff.com/pify?keyword=sc1+self+certification+sickness+form+printable, is flagged as a malicious redirector. The document also exhibits characteristics of a link farm, with numerous embedded links pointing to various PDF files, likely to manipulate search engine results or distribute further malicious content. The ML classifier strongly indicates maliciousness.

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=sc1+self+certification+sickness+form+printable In PDF document text
    • http://files.antiquityranchboergoats.net/uploads/1/3/2/7/132740545/9241925.pdfIn PDF document text
    • http://files.kaylaraesphotography.com/uploads/1/3/0/7/130740127/nifojilelusupebedu.pdfIn PDF document text
    • http://files.limadrivesdachurch.org/uploads/1/3/1/0/131070501/1610080.pdfIn PDF document text
    • http://fovun.leaveittomama.com/uploads/1/3/1/4/131407406/suwugimipibenevezez.pdfIn PDF document text
    • http://files.led21hd.com/uploads/1/3/1/4/131407952/pesojikisufuka.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/1/0428/1516/0487/files/57457068835.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9620/3679/files/kodekupinenis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2925/8649/files/92142268610.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3630/2750/files/lynnfield_ma_zip_codes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6850/5766/files/61984925057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/zasodaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7259/3821/files/abcde_del_melanoma.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5341/5576/files/alteraciones_cognitivas.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_off00004844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4844 5520 bytes
SHA-256: 8d1acb29fd81aa50957d06dee73c7dd5c23d2004ee91deebba62094ec2c20746
font_01_sfnt_off00005aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AEC 10040 bytes
SHA-256: 03895f395574b3da55fdeb5a55ed485c3464d5e1f438a9a8cc29f795733d7519

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