Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb732e3eb59f7c95…

MALICIOUS

PDF

44.1 KB Created: 2020-08-16 12:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 566aa762ed1eeea5f6ea413486eff6a6 SHA-1: 4bda2e045fc849638375c65fef988cb89a073543 SHA-256: cb732e3eb59f7c9526228fb89938fceadb3c77cb71882d79f300abcf5552103b
214 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a scholarship form, which is a common lure for phishing or malware delivery. The document body and heuristics indicate a callback phishing or tech-support scam pattern, further supported by the presence of numerous external links, many pointing to Shopify domains, likely part of an SEO link farm to obscure the malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=up+b.+ed+scholarship+form+2019.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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) documents that carry no urgency or charge/dispute escalation.
  • 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=up+b.+ed+scholarship+form+2019 In PDF document text
    • http://files.ezcproductions.com/uploads/1/3/1/3/131398547/e1b0528ad.pdfIn PDF document text
    • http://files.robinfarmer.com/uploads/1/3/2/6/132696104/4836073.pdfIn PDF document text
    • http://files.annamarieokedesigns.com/uploads/1/3/1/3/131379894/9276894.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/1/0430/9444/2137/files/22472745537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/data_analysis_and_interpretation_in_research_methodology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8821/6217/files/wixutijikepabu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6294/3144/files/46263658601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6528/6549/files/reporter_gene_assays.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4464/1695/files/wizugefe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2419/4468/files/98204224279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/keluwitewupeguve.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3434/3586/files/vodafone_annual_report_2020.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_off00006cac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAC 6040 bytes
SHA-256: d03376a00c080e2be2588989be9525971e466512b53a7987adb881c0733b44d2
font_01_sfnt_off00008110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8110 10196 bytes
SHA-256: f6970c305fa669663c6fc0dabb9a48bb2674a83d0826443cb8905f4f1bc5f4df

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