Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab53068d1a664617…

MALICIOUS

PDF

50.2 KB Created: 2020-08-01 23:20:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c6f7eb7c38ab5803b44289313b2cfb18 SHA-1: 4148914273cbaaabb9cec334f6147b6ad8910432 SHA-256: ab53068d1a6646178cbbf6ac4bd7db4b24d83d978aebf88e9f3ce1de3adecc44
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, ttraff.cc, which is disguised as a rate increase letter. The document body and heuristics indicate a lure to a malicious URL. The ML classifier strongly supports the malicious nature of this PDF.

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.cc/pify?keyword=rate+increase+letter In PDF document text
    • http://files.themissingbride.com/uploads/1/3/0/7/130740442/betovepuw.pdfIn PDF document text
    • http://files.tabithapang.com/uploads/1/3/1/8/131857655/nupoj-xokuzenibaluxo-xosadutonetalo.pdfIn PDF document text
    • http://files.inspiredbychoices.com/uploads/1/3/2/6/132695384/demojekegeg-rokowelotali.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/1/0434/1320/9246/files/genigalazoximawut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1577/4108/files/95965972363.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2710/1853/files/53564301159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/95365700235.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2626/5765/files/ramukojezonofimobejeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3469/6097/files/sapabava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0631/2093/files/3109071978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2670/1718/files/natawalegubujivobi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/nifiwifikuxufuzot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/dotodojurukojeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8178/5753/files/6111032495.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_off00008717.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8717 4800 bytes
SHA-256: 85be8db0f6a271238a031c4f1214aec8a847e273fffd1fc08bb7774a0e59762c
font_01_sfnt_off0000977a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x977A 10660 bytes
SHA-256: 9540bcfb4f5d9e3828cc230d7a2b2ae43b9b14dbf6905e38b6bc52f114dcb912

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