Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b9f2783a699e680…

MALICIOUS

PDF

49.9 KB Created: 2020-08-21 06:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb815d2dc716a929aaa62ac91dae8019 SHA-1: 02ce6d385219b19c444fa8f22688bbbf83e4d66c SHA-256: 6b9f2783a699e680393bf8499a08ecd246224804eeb25736d6c1962dea1de0a1
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are part of a link farm designed to appear as legitimate downloads. The primary redirector URL, 'https://ttraff.cc/pify?keyword=general+awareness+books+for+competitive+exams+pdf', is flagged as malicious and used in an SEO-based lure. This suggests an attempt to drive traffic to malicious infrastructure, likely for further exploitation or phishing.

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=general+awareness+books+for+competitive+exams+pdf In PDF document text
    • http://files.wanderingbydesign.net/uploads/1/3/1/3/131380600/jalonotixoxasug.pdfIn PDF document text
    • http://files.chattahoocheeorchestra.com/uploads/1/3/2/6/132695602/1704164.pdfIn PDF document text
    • http://files.alligatoralliance.com/uploads/1/3/1/3/131379362/931915.pdfIn PDF document text
    • http://xutidorop.crazyartmama.com/uploads/1/3/2/6/132683001/5f69d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9791/5545/files/42676840986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/ssb_stenographer_syllabus_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8669/9925/files/mixed_approach_to_research.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0429/7375/files/78433841938.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9719/0556/files/que_son_las_varices_esofagicas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6440/1818/files/congestive_heart_failure_esc_guideline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2812/5608/files/20350270370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/53478592007.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000773f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x773F 5544 bytes
SHA-256: 8cf89fc624d9549bce8eef16184874a699497cfb35e2018989dc482de0b31c73
font_01_sfnt_off00008a18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A18 9980 bytes
SHA-256: 253021af989aa2030cd1e6fedaf3060e6b9ec023100c57a8af21e8d7b4de4c30
font_02_sfnt_off0000ac48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC48 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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