Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab08c8a637af91f6…

MALICIOUS

PDF

50.5 KB Created: 2020-08-01 07:02:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5bfdc3e30881f8dd6d965fb6529d6c6e SHA-1: 37aee3bea4236cffd2ab1f0785522cd368f50176 SHA-256: ab08c8a637af91f6cf9e2429229fcc8c2d446abeab26698dae21f6ae0c707ee6
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to a URL that uses a game cheat keyword as a lure. This link is intended to redirect users to malicious infrastructure. The document also contains a large number of embedded links, many hosted on cdn.shopify.com, which is flagged as a link farm. The presence of these links suggests a phishing or social engineering attack.

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=gta+5+weapons+cheat In PDF document text
    • http://files.prairieflora.com/uploads/1/3/0/7/130738993/8387322.pdfIn PDF document text
    • http://files.muchzeal.com/uploads/1/3/0/7/130776037/buxajege-zajeti-nesisotew-vemopefuwaxiz.pdfIn PDF document text
    • http://files.inkfishltd.co.uk/uploads/1/3/0/7/130776368/faxorufedalakat_kugonadike.pdfIn PDF document text
    • http://files.chaunceyrasmussen.com/uploads/1/3/0/8/130814596/buwad_pivukaza_rinobogefanel_wakarazijexa.pdfIn PDF document text
    • http://files.bellavitatileoverstock.com/uploads/1/3/2/7/132740905/cfe78df64ff3f.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/1/0437/9069/6597/files/jivizalemuzeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2982/1602/files/wepafukubarojojijar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1135/8372/files/78568215498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6526/9669/files/59498784635.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/17914248296.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9602/3975/files/54485987379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/70082508468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/50605550645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4437/9546/files/puwanixotomog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5427/7532/files/56227521716.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_off00008791.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8791 5140 bytes
SHA-256: b798002ce6ad4edb4e2978a49de61c9895d4af431074dd664d0a2c02f8efa43e
font_01_sfnt_off0000992a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x992A 10684 bytes
SHA-256: 7720ea119e4c035bdd429c5bcc37548b67ea2a2ef436696334054ae43f207f44

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