Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab5f2aff5766c9b8…

MALICIOUS

PDF

45.6 KB Created: 2020-08-03 15:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d13c1ab5c9105135f382d0075ee921b SHA-1: 46d972f94db8ad784bc5915b3911aa3d4ddc290b SHA-256: ab5f2aff5766c9b87200d2ee9ddbc5b600bb2c2e427cbfb30f546cf2cdd42197
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.cc'. The document body, though partially corrupted, contains text related to academic material and the malicious URL. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely serves as a gateway to further malicious content.

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=quimica+inorganica+catherine+housecroft+pdf+download+portugu%25C3%25AAs In PDF document text
    • http://bofesos.basketballjerseys.ca/uploads/1/3/0/7/130775195/wumuvurapo-nizujifiguxazow-binalefavijal-tevulabababan.pdfIn PDF document text
    • http://files.healingvaccineinjuries.com/uploads/1/3/0/8/130874253/motofivenur.pdfIn PDF document text
    • http://files.vonderhauswulfgermanshepherd.com/uploads/1/3/0/8/130813797/fivepeno.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/1/0439/8976/2206/files/xabusibuwunumudiwul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9243/5359/files/rich_gang_lifestyle_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4361/8965/files/2106293828.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/7360657679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0832/7829/files/5675708205.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/luvafuvad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2137/6410/files/zipumefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zizamazigunonafimav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/17690066271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/zadorelozigaligotibivi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1676/5088/files/88208297011.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_off00006e1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 5872 bytes
SHA-256: 8f1ea28c16d8d70ded9c22d54e0b3621ddc3431542a7121723c6752d0f45ae98
font_01_sfnt_off000081c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81C0 10700 bytes
SHA-256: f8f3ec0dbc7f13af7cc2462ca1607002240a5b0a6d14042de3e32a6df00ec388

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