Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a40c9c68682f89…

MALICIOUS

PDF

42.1 KB Created: 2020-08-10 11:31:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 578b66888879e7812fa30b1ce3787679 SHA-1: 96496a7d772d8b6c8f4568cc6b12d6b1e878dee5 SHA-256: 04a40c9c68682f898cb8bfac3154c2fd9a6912adcb49d5f3e5cc719e59fc404c
194 Risk Score

Malware Insights

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

The PDF contains numerous links designed to appear as free book downloads, but they redirect to a malicious infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=arihant+books+for+iit+jam+physics+pdf, which is flagged as malicious. This indicates a phishing or scam attempt leveraging SEO link farms to distribute 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=arihant+books+for+iit+jam+physics+pdf In PDF document text
    • http://files.imperialgrp.com/uploads/1/3/1/3/131381006/d53dc3cd9e.pdfIn PDF document text
    • http://buzoxape.hannahleatherbury.com/uploads/1/3/2/6/132680813/b9cf32c59285741.pdfIn PDF document text
    • http://files.white-birch-farm-llc.com/uploads/1/3/1/0/131071166/5fe3eac.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/1/0431/7036/5602/files/69584155185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7643/5621/files/vunosobibomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/29128415543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7341/3028/files/27337054392.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6788/2134/files/download_books_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/kohler_command_20.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/20610440825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8199/0295/files/gidapixamigavulazemivitif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3844/0598/files/42321292581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7583/6840/files/17738661369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0030/files/arpegios_para_guitarra_clasica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8097/2456/files/new_year_bulletin_board.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 6

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_off000064ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EE 5732 bytes
SHA-256: 7778c114b543e64b937ca7b70c7bc21e9db1d3126f3b175a6043804d8566b847
font_01_sfnt_off0000784f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784F 10368 bytes
SHA-256: 8603ab01a5c1e04fcfeede76235b99762af8ff6a3b0727708edc5ffcff46d77d

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