Malicious PDF — malware analysis report

Static analysis result for SHA-256 8aeca6ec8ed8c1b4…

MALICIOUS

PDF

34.9 KB Created: 2020-08-19 14:28:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c404a6e022e3246fdb3b32880f0c55bb SHA-1: 576c551fb8330bdfd643224e1c83795427889572 SHA-256: 8aeca6ec8ed8c1b45eff2be8837e2c6f3cda2ef5783cfe22648574a1435c117a
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, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a reference to the same URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely for obfuscation. No scripts were extracted from this sample.

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=chill+out+chair+order+form In PDF document text
    • http://files.thepulsefromcandi.com/uploads/1/3/1/4/131483440/nukuzaju-kazisut-kenakovabuleg.pdfIn PDF document text
    • http://nodizol.nalomelihoney.com/uploads/1/3/0/7/130738870/814929.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/1/0440/5549/4806/files/the_beautiful_names_and_attributes_of_allah_uthaymeen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0800/8090/files/90499568802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/taresipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7974/5192/files/mulebisikixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/two_way_street_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/bawub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/toputal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0417/4233/files/ruxiwigujunoxowigoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6490/1270/files/using_commas_in_a_series_worksheet.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_off00004b0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B0B 4988 bytes
SHA-256: 9d258afefacc98236da12349fb275c5383a11ea1d3ae828ba09541bc614c00a8
font_01_sfnt_off00005bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD8 10312 bytes
SHA-256: 80524347bf63604744aee6b524976a02f2935122f874977a3e3ef58cc9664870

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