Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b4091a095ce4757…

MALICIOUS

PDF

48.1 KB Created: 2020-08-08 02:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6a984d2a4e0dede7f634ef87ecee5305 SHA-1: 5a86c8e2f6b55b4708911d42170056c0df815d9e SHA-256: 0b4091a095ce4757a185726b728cc0863c0a29b60b3a17c07f5b0786326ad529
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with several links pointing to known malicious redirector infrastructure like 'ttraff.cc'. The document body, though heavily obfuscated, contains URLs that are likely intended to trick the user into downloading further malicious content or visiting phishing pages. The ML classifier 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=esquema+de+vacunacion+antirrabica+humana+pdf In PDF document text
    • http://files.luludeuxmillinery.com/uploads/1/3/0/8/130874252/7517901.pdfIn PDF document text
    • http://files.spiteripottery.com/uploads/1/3/1/6/131637308/tolaru-juxib-bopip-mevokakudi.pdfIn PDF document text
    • http://files.millerwebdesignservices.evansconstructionconsultingllc.com/uploads/1/3/1/8/131860938/xexugikirav.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/1/0432/0978/5499/files/20874701666.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7153/6285/files/puzur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4954/1017/files/rfid_based_attendance_system_project.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6083/8050/files/41247200832.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8456/files/largest_prime_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8209/6541/files/psql_fatal_password_authentication_failed_for_user.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3865/3086/files/crossword_puzzles_easy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/43581252485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6601/5396/files/take_courage_bethel_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7931/1253/files/24544776765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1573/9304/files/useful_adjectives_in_english.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
🗂 Part of campaign: evansconstructionconsultingllc.com 7 samples

Related samples 7

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_off00007890.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7890 5648 bytes
SHA-256: 52c5200a4d28106d2df8ea5af3c2903a05743f5e644cd0a31319df5cb459d003
font_01_sfnt_off00008b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B99 11660 bytes
SHA-256: 5e2d05ca2d3cd4761abe24c25d5ceca31441157ba20435b12333438966b6119d

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