Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1925024aa2fbacd…

MALICIOUS

PDF

50.0 KB Created: 2020-07-28 09:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8cb4a39d869c896fbc6202dc597f7005 SHA-1: 6ca5fc0d97aa1adfd00a786f8e1558efd239b3bb SHA-256: a1925024aa2fbacd8b34b60e2eab4a6f3217204550efb672d676890b7f35dc1e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=crowdsourcing+platform+wipro'. The document body, though heavily obfuscated, contains keywords related to 'crowdsourcing platform wipro', likely a lure. The presence of numerous PDF links, including one hosted on 'cdn.shopify.com', indicates a broad distribution attempt.

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=crowdsourcing+platform+wipro In PDF document text
    • http://files.kozal.net/uploads/1/3/0/8/130814208/lavus_pixogosodudixu_nusowero_xemolo.pdfIn PDF document text
    • http://files.nlg-pros.com/uploads/1/3/0/9/130969910/katixiratowapo.pdfIn PDF document text
    • http://files.afmxschool.com/uploads/1/3/1/6/131636834/2622799.pdfIn PDF document text
    • http://files.lifegateindependentbaptist.com/uploads/1/3/2/6/132682235/177f1.pdfIn PDF document text
    • http://files.carolinechurch.ca/uploads/1/3/0/8/130813037/dd376.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/1/0432/5274/4347/files/5544324487.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dubisetebezurazoxodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2026/3322/files/lonav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/tebisokebonotusirokake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/dufigugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/tumelagaferuvujew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/89120683065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/62138949062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/82191842179.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/maxemefebegisatujanudiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6479/5046/files/24201586985.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_off00007ea9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA9 5352 bytes
SHA-256: 985d6384b33d1c750c190ee1eab11416423d4079163dfcf6dc5a555fcb8ae008
font_01_sfnt_off000090d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D3 12988 bytes
SHA-256: 85e05a98ac5d5d3eec6899ded6bb9a8e7c6060620c192e8869776891bcd44c12

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