Malicious PDF — malware analysis report

Static analysis result for SHA-256 13ba0634344ab723…

MALICIOUS

PDF

47.0 KB Created: 2020-08-13 03:15:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a3d6fbea8651c642771da765edd70781 SHA-1: 2c2259a11ea589f0fee23c7086b295a9acfaed11 SHA-256: 13ba0634344ab72342bd9196c1211072e7e3dbdc15390edc427126144155308c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL is `https://ttraff.cc/pify?keyword=definition+of+applied+ethics+pdf`, which likely serves as a lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to manipulate search engine results for malicious purposes.

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=definition+of+applied+ethics+pdf In PDF document text
    • http://mawuw.kingston42.com/uploads/1/3/1/4/131438759/bakolakito_denenaruf_gutopojonafiz.pdfIn PDF document text
    • http://files.bothwellfarms.net/uploads/1/3/2/6/132682882/a2b38f8b6.pdfIn PDF document text
    • http://files.pacifictraininggroup.com/uploads/1/3/2/6/132682441/7d91c07658.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/1/0428/5428/5479/files/95538836392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3694/9152/files/ibps_rrb_notification_2020_freejobalert.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5597/2501/files/cbse_affiliation_bye_laws.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/27881765200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9431/9009/files/31312744414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7886/7351/files/1100726925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6091/9461/files/87015374100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3006/9927/files/lupimetaruteradawubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6749/7884/files/78921297250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1724/8672/files/29177394401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2605/4306/files/83213390647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0499/1400/files/nizimoleloleru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7497/7945/files/88673319178.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 3

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_off00007a29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A29 5148 bytes
SHA-256: 0e3af551ccbf2a90a1e0207f54a763f048b8692852a6bb489552f53eebc115fb
font_01_sfnt_off00008ba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA7 10412 bytes
SHA-256: 28a8b3bfb28a4f4d63626a3fa938824ab4e573e0b0727d76eb7dc6280777bfb4

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