Malicious PDF — malware analysis report

Static analysis result for SHA-256 a91c2d05523fb27c…

MALICIOUS

PDF

49.9 KB Created: 2020-08-05 01:29:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1ff31a99851af01301dd68c546ef01b SHA-1: 611b45bd41ed52b35e1bdd1367614a22087372b1 SHA-256: a91c2d05523fb27c5da67f4327025b42f71344da405c4d5a2f24282780aaaa99
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=budget+sheet+template+pdf'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=budget+sheet+template+pdf In PDF document text
    • http://files.petaloudatherapies.com/uploads/1/3/1/8/131871424/7710717.pdfIn PDF document text
    • http://files.tonyottenauthor.com/uploads/1/3/1/4/131453924/847da69e.pdfIn PDF document text
    • http://files.akinvogg.com/uploads/1/3/1/4/131437276/lojafigutiz.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/1/0430/2841/4618/files/89012630984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6773/4176/files/zulawelabesopaxakalef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zipepatijexozuzazes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5552/1695/files/baripepuxosisipokemifuzeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/brahms_requiem_soprano_solo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8765/files/63446798878.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/tifutedoboviro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9463/8749/files/bubivetobenajulesanirujin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9291/1007/files/79237405077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7130/5896/files/7335744960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9241/0525/files/le_dialogisme.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/39672168255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/92589356748.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 5

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_off0000833f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x833F 5408 bytes
SHA-256: 81fcdaf04f8d2179d3ad909968de764deaecbc848ec10484a0a642aa17583b0d
font_01_sfnt_off00009588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9588 10824 bytes
SHA-256: 40573553cd2ac49d7840f6cde30fe5a352facc93f2475193d86a504da18b3997

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