Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e1cfccba1b25ba…

MALICIOUS

PDF

46.0 KB Created: 2020-08-23 04:49:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fa5c42812d45f7da2f163d1d1c332357 SHA-1: 553b197ec975ad7c513ee2a217ef4e8ff8c07d64 SHA-256: 42e1cfccba1b25babef1b775692100ec3673b08abc334be556ec5e15d9dbfb33
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a keyword related to water testing. The PDF also features a link farm of numerous external PDFs hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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=coliform+test+well+water In PDF document text
    • http://mutitosi.sisterssangha.org/uploads/1/3/0/9/130969521/rurodaduro.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3321/4621/files/61928872637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6371/9574/files/echo_srm_225_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4320/9895/files/12894549603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/delegojigodidiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/roxaxazag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8671/5805/files/juzobinisufirarebexuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5830/8006/files/dovakamelutawifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9535/9642/files/12606679173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7629/6614/files/walmart_cashier_training_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/anatomia_y_fisiologia_del_higado_y_pancreas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1711/7589/files/39872691209.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ABE 4712 bytes
SHA-256: cbc7fd96037c7b04b2df186574338a5bcc39a7f50ec440b07ef741414efa518f
font_01_sfnt_off00007ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC9 9996 bytes
SHA-256: 78ff459a48400422ab8f5255970daa75fc874afb770285d2d38bf5d2a4ce265f
font_02_sfnt_off00009cf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CF8 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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