Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a3bda67f7bf3c3…

MALICIOUS

PDF

40.3 KB Created: 2020-08-20 02:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8c2ded8b635ecc921a7c37a29f6ab204 SHA-1: f7fedab95b5b40b3b83279899b8ee0001efbda43 SHA-256: c1a3bda67f7bf3c3e06b1112855444a3ea163aa7c23796cf80ada58d430aef5f
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external links, suggesting a link farm or phishing lure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=epo+guidelines+intermediate+generalization. The document body contains garbled text but includes the same malicious URL and several benign-looking Shopify URLs, along with other suspicious URLs hosted on various domains. 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=epo+guidelines+intermediate+generalization In PDF document text
    • http://files.littlepoppitsphotography.com/uploads/1/3/0/7/130740573/57d8b69405.pdfIn PDF document text
    • http://lepoxe.the-songbirds.com/uploads/1/3/1/3/131398504/zagagum.pdfIn PDF document text
    • http://files.durjavaoriginals.com/uploads/1/3/2/7/132712093/vozemawobuveni-fovaja.pdfIn PDF document text
    • http://files.chardonnayhoa.com/uploads/1/3/2/6/132696113/7518133.pdfIn PDF document text
    • http://nekebex.woodfieldparkbaptistchurch.com/uploads/1/3/1/4/131408899/d42cf.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/1/0432/5959/2859/files/9475865735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9648/0671/files/54514523102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9938/1157/files/10550023572.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9739/1265/files/47759698565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6971/9196/files/domagetozozavugaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/kipofutudanivigisatemib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6132/1621/files/too_many_items_1._13._2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/baxaweg.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_off00006037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6037 5284 bytes
SHA-256: 19636c6dde2cc90f81de5ac3d0256688cf7fb0861fdca3b7a6a25368f9241a96
font_01_sfnt_off00007221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7221 10028 bytes
SHA-256: 81c5d05e190e21cca735a35c345f160fd05272db0a569d8e8b165fd4c13ae3e0

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