Malicious PDF — malware analysis report

Static analysis result for SHA-256 75c3e36c7e89792c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-12 12:53:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f0a201d00fe5ca394cb15701884e171 SHA-1: c7cb403f38dc19f16e10798d720ab167c41ee8f5 SHA-256: 75c3e36c7e89792c57904ab226b5722cfc4a0b62cb4009b5c689f50625a492c4
194 Risk Score

Malware Insights

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

This PDF document contains numerous links to external PDF files, presented as a 'free download' lure. The primary redirector URL, https://ttraff.cc/pify?keyword=advanced+mathematics+1+by+pandurangappa+pdf+free+download, is flagged as malicious and part of a link farm. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to potentially malicious content, likely for phishing or malware distribution.

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=advanced+mathematics+1+by+pandurangappa+pdf+free+download In PDF document text
    • http://files.longviewpaws.org/uploads/1/3/1/4/131438071/wotakuma-pafututaruwox-xifiderafipuri.pdfIn PDF document text
    • http://files.ibrahimmorgantourguide.com/uploads/1/3/0/9/130969037/nuranizozarusaruz.pdfIn PDF document text
    • http://files.livingwhole.net/uploads/1/3/0/8/130814121/8af1c2.pdfIn PDF document text
    • http://files.lonestarspringers.com/uploads/1/3/1/3/131379706/f8e81b1.pdfIn PDF document text
    • http://files.thehaesslyagency.com/uploads/1/3/2/7/132740723/075029a48e65.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/1/0435/3461/4688/files/annona_senegalensis_vertus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xigorekotat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/21777263355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6618/7176/files/harley_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/jiroditirodubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6997/3415/files/20090039145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6130/4728/files/40279320790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4276/5991/files/14755310690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7063/5680/files/nicomachean_ethics_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2422/0321/files/29719679207.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B70 5884 bytes
SHA-256: cc035daeb84280f6c1303ed1a6711f9d8041212c1df9b1a28e48d3966fef84b3
font_01_sfnt_off00005f5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 9672 bytes
SHA-256: bc528c68a11bfe9af20c46d01c9ca010c0cee5eea70e338abdb95f8b1af36b5f
font_02_sfnt_off0000809f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809F 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off000095b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95B4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361