Malicious PDF — malware analysis report

Static analysis result for SHA-256 7334b44b95ad0bc5…

MALICIOUS

PDF

43.1 KB Created: 2020-08-10 05:27:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d07901b970b63bada540dbd6346a8fda SHA-1: e864f0fee438c790e5745bffdeae1be65a7bbc5e SHA-256: 7334b44b95ad0bc56b2ef002d7059097a2441c72006cca650d9b3a9384ea80a5
222 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to an SEO redirector, specifically `https://ttraff.ru/pify?keyword=arjun+classes+physics+notes+pdf`, which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of a large number of external PDF links, many pointing to Shopify domains, indicates a link farm designed to obscure the malicious redirector. No scripts were extracted, but the PDF structure and malicious links strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=arjun+classes+physics+notes+pdf In PDF document text
    • http://files.kimberlyenglish.com/uploads/1/3/2/6/132681976/2a26d0bee45e.pdfIn PDF document text
    • http://files.it-ninja.nl/uploads/1/3/0/9/130969710/bafuv.pdfIn PDF document text
    • http://files.stteathpreschool.com/uploads/1/3/1/0/131070331/bawoso.pdfIn PDF document text
    • http://files.marsitlab.org/uploads/1/3/1/3/131379828/3bd2ae101.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/1/0429/9735/0554/files/sermon_on_isaiah_61.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5352/files/15558950129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9503/8877/files/xemawinemupavutumibosaxon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8560/2721/files/58994080528.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49839171509.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6652/files/pemumerox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/51787537574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/xobenudawurakikilo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/tuniraso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/vuzugeletabanewudedoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1724/6632/files/black_star_ascii.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7494/4153/files/64201611537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9948/8423/files/tupovefotogoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/45408559027.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off000053d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53D3 5408 bytes
SHA-256: cd4216e26f7ffb816efab08eba17acf0b5120c5e2a58f197cbc07b05d32feaac
font_01_sfnt_off00006640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6640 9952 bytes
SHA-256: 0b9de48a3cce35d1f92d190cc9a4a269f023bd29e7ad1f21ed8aa6712b544c7a
font_02_sfnt_off00008891.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8891 16488 bytes
SHA-256: 91c30074f85501cb5fe9baf33f35f843940bfa30be12b849312283e920dd8f5d

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