Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0995f07a23d7c06…

MALICIOUS

PDF

39.2 KB Created: 2020-08-02 10:12:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: da5f7dfcdb63b366904dbeee764ed69c SHA-1: 5907733391be52a522d09383c30a993da99d7022 SHA-256: a0995f07a23d7c063382b4b7760185e37c8c54630ac9f30325418a11a86d8d6c
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a sexually explicit keyword. The document body also contains this URL and a large number of other PDF links, many hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to a malicious site 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.cc/pify?keyword=super+deep+throat+porn In PDF document text
    • http://files.prairiekate.com/uploads/1/3/1/4/131437878/6227ed63a3b6d1.pdfIn PDF document text
    • http://files.naturalgallantbodybuilding.com/uploads/1/3/2/6/132681672/vuwofetozikokuwude.pdfIn PDF document text
    • http://files.pampaband.org/uploads/1/3/1/4/131408664/lanexafuz-vazifogopuvi-lofafuzuxok.pdfIn PDF document text
    • http://files.anggonolab.org/uploads/1/3/1/4/131438188/sizizizu.pdfIn PDF document text
    • http://files.vabigfootconference.com/uploads/1/3/0/7/130739833/losopepek.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/1/0429/9168/1699/files/junovelizesupipovabesab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2230/2888/files/motidudimuruzusonemomixib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0029/7633/files/jersey_future_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/lepeluz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3033/1047/files/lolividujojarafom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8384/2215/files/xomelubefimoji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/jodunixomorobufejekuban.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5827/4205/files/1892406894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/11386561659.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4677/2646/files/zubileletizedezavusepuv.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_off00005c04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C04 4940 bytes
SHA-256: 6537ebf706b1b7306a0a2a16ed7c4dcf2f92c5c37207af8cf3e218146cac3ab9
font_01_sfnt_off00006cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC7 10360 bytes
SHA-256: 2fbdc18c4a0eb4570f7de41a137baa3063dec5ec537d90f8212c9a2d248e4468

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