Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c31138f3fbb2463…

MALICIOUS

PDF

42.5 KB Created: 2020-07-31 12:52:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9a80f8983679076732b0fd48f9bd3f8d SHA-1: 5d8d1d8a5d9988e59c5b7a0cb532661378d5bc6e SHA-256: 0c31138f3fbb246334fec20b64093b5ed17e14d366a6359f7c249239807eeafa
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service designed to host a link farm. The primary redirector URL is `https://ttraff.cc/pify?keyword=physics+today+november+2020+pdf`, which is likely used to disguise the malicious intent behind the document. The ML classifier strongly indicates maliciousness, and the PDF structure suggests an attempt to distribute further malicious content.

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.cc/pify?keyword=physics+today+november+2020+pdf In PDF document text
    • http://files.ceoyear.com/uploads/1/3/1/3/131382141/f249b98b8.pdfIn PDF document text
    • http://files.kissre.com/uploads/1/3/1/4/131438161/65581792161.pdfIn PDF document text
    • http://files.thecanvasofmylife.com/uploads/1/3/1/6/131637242/noturaxipekekan.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/1/0431/0473/1300/files/89546830529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/17655834448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0197/0837/files/58806746011.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/kefirutipoxisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/duzedekilotedizuvoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5590/files/27768912894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/jevasemuwizukuminale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4819/8556/files/99481834791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7199/6053/files/wokusamafuvafexajasuzara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9209/8724/files/23778762390.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 1

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_off0000678a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x678A 5728 bytes
SHA-256: f828f6040c0502b25490bdcde4323ed19cf99be5e1a37fb575782f85d257a934
font_01_sfnt_off00007ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC9 10140 bytes
SHA-256: 10f4fd6bb5a5ffda02530a2bb46d8b3d3c80b53dd2e4660236ec22ba3fcccd7d

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