Malicious PDF — malware analysis report

Static analysis result for SHA-256 af3ba43cc6069b84…

MALICIOUS

PDF

38.0 KB Created: 2020-08-14 17:25:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5c1f24b7719bd8cb099cf2dd457959df SHA-1: 086d8c4057aa6a8484595bc692893893c0b8df6b SHA-256: af3ba43cc6069b845e5c6fc359d13aa063ee579819f90fbbdae23740495ade8c
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, disguised as a tax form. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and the embedded URL points to ttraff.ru. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many hosted on Shopify, likely to obscure the malicious destination. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=1040ez+exemptions+worksheet+2017+line+f In PDF document text
    • http://files.creativationevents.com/uploads/1/3/1/8/131856772/1290035.pdfIn PDF document text
    • http://files.elkriverjigs.com/uploads/1/3/1/4/131453998/xowetezubabudoveko.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/1/0430/9752/2329/files/jalagaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2310/5175/files/cadsofttools_a_dwg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3698/9850/files/mogikope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3617/2710/files/zopefiwujoxene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2004/0866/files/44947182490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/gazatelaguratag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7102/0960/files/rodas_da_vida_anodea_judith.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5300/6494/files/lifojarinawopovamipeseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/18983443830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8701/0715/files/lowes_longview_wa.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 8

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_off00005632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5632 5604 bytes
SHA-256: 399c68fa2d38fd7f4f6f5749709ab2bedc5c9779bb10bcc98b1dc22d7b5caa03
font_01_sfnt_off0000693f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x693F 10004 bytes
SHA-256: 442094e3d81d3ad3e7e8b8ac952b589c78035fea09483e53b537ec07517752ba

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