Malicious PDF — malware analysis report

Static analysis result for SHA-256 75bf089a739e4bb1…

MALICIOUS

PDF

71.3 KB Created: 2020-11-05 03:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b5d42a6e6d65eb916babfabc04c8d19f SHA-1: 747a58dd74327b9783ec431056c0979fba137e21 SHA-256: 75bf089a739e4bb1a085001a2144316a55344a37aae1d48981ba45a03927e0d3
170 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which is identified as a malicious redirector. The document body uses a lure related to a garbage pickup schedule to encourage clicks. The ML classifier strongly indicates maliciousness, and the presence of numerous external links suggests a link farm or SEO poisoning attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/123?keyword=town+of+hempstead+garbage+pickup+schedule In PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/daduzapis-nexugedupol-bawis-momenazux.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/risufidu.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://s3.amazonaws.com/roxawo/cdl_manual_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/what_are_the_main_characteristics_of_modernism.pdfIn PDF document text
    • https://s3.amazonaws.com/fodose/secret_life_of_bees_quotes_chapter_8.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/dedugupabinekekajoradepof.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/rapid_tone_reviews_shark_tank.pdfIn PDF document text
    • https://s3.amazonaws.com/rekibedafowow/destiny_2_what_are_precision_kills.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/59424033058.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/85216623116.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/google_drive_synchronize.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/koxomiredifirebevarupik.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA32 5696 bytes
SHA-256: e2927cffacb2bb4df79031da9bebfa2ae4ca45cc93f21991ccd1d4e1229815be
font_01_sfnt_off0000dd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6E 10696 bytes
SHA-256: ae82970425c88e55297c31576b59436c0d64d23b8370649401dfb0ae33febfac
font_02_sfnt_off000101d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361