Malicious PDF — malware analysis report

Static analysis result for SHA-256 af28e04f1371743d…

MALICIOUS

PDF

46.4 KB Created: 2020-08-24 21:25:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8ba28aa56fd07dbd438c4f6f200d8ec1 SHA-1: 9e5541c4a979598cd8f5acae3f658418c206ecf9 SHA-256: af28e04f1371743d9a551fdf3d9ee689ffdec31c8a451359796294483a376592
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure users to malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=the+roots+phrenology+free, which is likely intended to lead to further malicious activity.

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=the+roots+phrenology+free In PDF document text
    • http://files.westernsaddlesrus.com/uploads/1/3/1/6/131606011/tutivepodukosesofov.pdfIn PDF document text
    • http://vasanoz.northdevonbiosphere.org.uk/uploads/1/3/0/7/130776485/nasezejegi.pdfIn PDF document text
    • http://vipuxefe.clooneyns.com/uploads/1/3/2/6/132696323/636747d2851225.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/1/0438/5882/1285/files/sale_of_business_contract_template_qld.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/7030/4935/files/remix_os_for_pc_android_64_bit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/btwin_triban_100_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7075/8820/files/dibakisazokuwoleguw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0237/9939/files/vapuruwexi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/29497107134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/70915132798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5543/8241/files/biblia_de_estudio_thompson_para_leer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1523/3959/files/95225536413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/1996_isuzu_trooper_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/papozezomojup.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_off000077f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F1 5004 bytes
SHA-256: 4998aa315424388f1d55213f2e74fb4006daa38cf8f06914baec1847167180f3
font_01_sfnt_off00008903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8903 10528 bytes
SHA-256: 5797ef21bf18bab24e33cdec61553f3338ab884a323e85e005537c139f457f53

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