Malicious PDF — malware analysis report

Static analysis result for SHA-256 af70f26283044504…

MALICIOUS

PDF

39.0 KB Created: 2020-08-04 10:08:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3dd2da849338704a60b88b23221a2c46 SHA-1: fa263bc1c2474664e3842464db10a8e51a61df09 SHA-256: af70f262830445046d410c8992ebf79262eb0a7a890436e5470bd85ece175b5c
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and other URLs that appear to be part of a link farm. The primary attack vector is likely a phishing lure, directing users to malicious infrastructure.

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.ru/pify?keyword=activity+series+of+metals+and+nonmetals+pdf In PDF document text
    • http://files.derekbrereton.com/uploads/1/3/1/3/131380730/nupok.pdfIn PDF document text
    • http://jenile.salve-eebee.com/uploads/1/3/0/7/130775934/janefagetujakelerewa.pdfIn PDF document text
    • http://files.myroyalorganics.com/uploads/1/3/1/3/131381839/65908d4663a7be.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/1/0427/9359/9132/files/21317427868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/25978988572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/pijuwujifimeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0129/8589/files/centre_of_mass_and_centre_of_gravity.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6676/9051/files/limaxax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/figarawevig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6547/5229/files/68640480140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/vekedujezitomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5107/1126/files/81411828525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/76470120820.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6171/3813/files/beautiful_boy_john_lennon_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/num_de_tarjetas_de_credito.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 4

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_off000059e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59E0 5452 bytes
SHA-256: afa94ed8f0bf7c0d56d9c233e0df7fbcafd6c611e57bdc6bce352a9583fffaaf
font_01_sfnt_off00006c67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C67 10076 bytes
SHA-256: a724a645af2f907c9cbbdedcadd8aae0a81579f931ad33102f80ff6ea134b14e

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