Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b98b8f32069bb88…

MALICIOUS

PDF

43.1 KB Created: 2020-08-12 00:29:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d11a3eca68a1b94d662425f0ac227903 SHA-1: 50ec54d58d2ed1d19d398669882b19748612aa5d SHA-256: 0b98b8f32069bb88fe47bb5e26e4d6ed5fed3ba38cdff842c7c2c38408cbeec9
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body also contains the same redirector URL, suggesting an attempt to trick users into clicking it for a 'free download'. The presence of multiple Shopify links, some benign and some potentially malicious, indicates a link farm strategy. The ML classifier also strongly indicated maliciousness.

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=little+house+in+the+big+woods+pdf+free+download In PDF document text
    • http://biwuroko.riefcanada.com/uploads/1/3/0/7/130739561/dilusorob.pdfIn PDF document text
    • http://files.visionworksmultimedia.com/uploads/1/3/1/3/131379183/mivenuzigufogoweb.pdfIn PDF document text
    • http://dafes.alliedavison.com/uploads/1/3/1/6/131606255/9352362.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/1/0428/9835/8432/files/47184882359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0183/9775/files/national_lampoon_s_barely_legal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/21237602188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/naruto_shippuuden_episode_77.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/corrupted_file_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6627/8556/files/rijomobevojirorunevor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6539/2804/files/mujafawajokofanebenujijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2585/8714/files/49277130652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0243/6512/files/maguleleremaxomokefa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5905/9605/files/ds3_ancient_wyvern.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0491/9971/files/java_aptitude_questions_and_answers_for_freshers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6182/0054/files/98198855370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rewosegukedisupagur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0564/8807/files/chapati_recipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4252/9695/files/15813071402.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B2 5476 bytes
SHA-256: 0e29ca8d5573c9263f98804f90ff7f70d63029f3721b0cc84b0ae10107bf99ce
font_01_sfnt_off00007c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C55 10112 bytes
SHA-256: 2ea924ef0b9aae76e793062b8ca56c4b9f81eaa5ae4696709c56892e432e7e8a