Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5222d7873b02c3a…

MALICIOUS

PDF

44.0 KB Created: 2020-08-03 09:24:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c39c5fb3c9542ac4ead911acfcf83aa2 SHA-1: 3374a3c16f66225cda77c87da71549acff495ef2 SHA-256: a5222d7873b02c3a71ed4a92091b0d3832975bac34f4461afbdda924b74a4320
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering 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.ru/pify?keyword=white+rodgers+1f80-+361 In PDF document text
    • http://files.safetygradelicensure.org/uploads/1/3/1/3/131398455/7127695.pdfIn PDF document text
    • http://files.msbes.com/uploads/1/3/0/7/130776573/zutetejimer-ruvuvi-nokiwevijajapot.pdfIn PDF document text
    • http://files.hounganjulian.com/uploads/1/3/1/3/131383283/fetejuvajuterudafab.pdfIn PDF document text
    • http://files.nicreconciling.org/uploads/1/3/1/8/131857920/zifawax_zemupepirezized_tukatoxijeda.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/1/0436/1460/1378/files/22016336426.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8482/4222/files/saxokuxileboler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8423/files/96909916318.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/63756189064.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/nuduwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6621/9941/files/ponemolozujuvabof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0607/4780/files/57438015362.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5393/2966/files/folizimisikatenobexe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6282/0005/files/mebibixat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/22273578698.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_off00006338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6338 5680 bytes
SHA-256: 2dfd95b9333baca1c9fc7e6d8e01699600f8e50f85790aa1b1a4319a7f1e5e67
font_01_sfnt_off000076a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A6 13928 bytes
SHA-256: f581466a454731344e6bd7db94c0007c78b0db27389d8ae3a40464f80e73be37

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