Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab0c88b7993a5b85…

MALICIOUS

PDF

35.0 KB Created: 2020-08-10 16:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c4973cdb9215600fb8d6f5d0b07d5760 SHA-1: e08a40b19eac8949147b3cd392e546fc19a37da3 SHA-256: ab0c88b7993a5b85e98a9d957fc6db6d50e1e83fb7484273d9aac8ebff6cef51
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bittencourt+penal+volume+3+pdf'. This indicates the document's primary purpose is to lure users to a malicious site. The presence of numerous other PDF links, many hosted on shopify.com, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No scripts were extracted, but the embedded URLs and redirector link are sufficient indicators of malicious intent.

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.com/pify?keyword=bittencourt+penal+volume+3+pdf In PDF document text
    • http://files.prattindustriesboxesericstorm.com/uploads/1/3/1/3/131383763/6124266.pdfIn PDF document text
    • http://files.drkaylee.us/uploads/1/3/2/8/132815882/03a2aa143bd.pdfIn PDF document text
    • http://files.rcmissouri.com/uploads/1/3/2/6/132695732/komumetijote.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/1/0432/4841/8971/files/towozirikibuwufekoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4553/6419/files/wijokokumujokivukigogir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4303/6053/files/masonavuxuzediluwuzozimag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gamusuzojikifikukudubug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/58823906320.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6855/5415/files/18669165102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/30512455802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5089/9368/files/jinatas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/49686178259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2935/6959/files/67398678553.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 8

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_off00004a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A28 5396 bytes
SHA-256: faa4740044ed13b6b02cad0426ab69f5da940281797d21144463e68e3c24d449
font_01_sfnt_off00005c6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C6E 10236 bytes
SHA-256: 3e940f0325060a5546ed2f832a113bbb55002c852bdf616db055419e19363812

Open this report in the interactive analyzer, or submit your own file for analysis.