Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fbaa448befb6518…

MALICIOUS

PDF

36.4 KB Created: 2020-08-27 15:44:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a85c1fd16e06eadd5ec67401f7b2f8e0 SHA-1: 27b5bc4206771204b4c56d96e5d921f958afd3a1 SHA-256: 0fbaa448befb6518167f66f06b7a27368112f27c8896c5da0770ddd582e84f17
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known to host malicious content. The document body, though heavily obfuscated, contains text that appears to be a lure for clicking the provided links. The ML classifier strongly indicates maliciousness, and the presence of a malicious redirector URL supports this assessment.

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.me/pify?keyword=cissy+strut+lead+sheet In PDF document text
    • http://mogodaze.newthaiart.com/uploads/1/3/1/4/131454215/8653989.pdfIn PDF document text
    • http://jinut.privateislandsproject.com/uploads/1/3/1/4/131437657/rivewop.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/1/0429/9476/1877/files/duwagetafas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6339/1894/files/a_guide_to_sql_8th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9477/6739/files/ankle_sprain_rehabilitation_program.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5687/3128/files/83705860772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0717/9941/files/43911820899.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9430/2115/files/netflix_for_android_tv_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6060/9692/files/rudram_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8528/2980/files/fevobopagifalile.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9338/4599/files/sageworozonunuxoni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0134/files/nevos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/8673/3473/files/26661742066.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 5

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_off000043dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43DC 4704 bytes
SHA-256: 1fe30fcf9bfcee89a539eb6191cec52b55b12f1770c66da4657949f2b39ca7ca
font_01_sfnt_off000053e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E7 10268 bytes
SHA-256: 87e86c29a73ffeeb890a3b3b3397977c8065db4e4acc6fcd397b7dba064cc5a7
font_02_sfnt_off0000770e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770E 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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