Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f0c095624496485…

MALICIOUS

PDF

41.8 KB Created: 2020-10-07 15:08:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 09c2d9633ded096aa52134addbaa62f8 SHA-1: 242af6b3be2183ef1bffc0b498cf1829bb30decd SHA-256: 2f0c095624496485dbadba38647a883bb894f51ce782b4985bfcaca5f3485e30
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to benign Shopify URLs, but one critical link directs to a known malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest an attempt to lure users to malicious infrastructure, potentially for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/pify?keyword=tank+trouble+5 In PDF document text
    • http://files.parrottlibrary.org/uploads/1/3/0/8/130874614/segawopukaxovuzo.pdfIn PDF document text
    • http://files.challengerelementarypta.com/uploads/1/3/1/6/131606262/7114255.pdfIn PDF document text
    • http://gedawamus.kristopherbenedict.com/uploads/1/3/0/7/130740199/88aa663d4ce9.pdfIn PDF document text
    • https://site-1039324.mozfiles.com/files/1039324/24296858740.pdfIn PDF document text
    • https://site-1041583.mozfiles.com/files/1041583/xodapubatof.pdfIn PDF document text
    • https://site-1040359.mozfiles.com/files/1040359/lofatobizusidefufib.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/noluminizuzaxarelisokor.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/1/0486/2961/2709/files/nuzatogozozazura.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2089/3864/files/4115227873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3751/0817/files/gaberomokat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5856/1175/files/historical_methodology_for_thesis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1152/1181/files/dourmashkin_classical_mechanics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5529/8213/files/seputanatuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8719/0952/files/5307921608.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6441/7694/files/wofudoparigobesurulasu.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_off00006736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6736 4780 bytes
SHA-256: 7aa3f7ab8be21227fa24c6df3a949eebcce6112122c927fe899f1737dffef563
font_01_sfnt_off0000778f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x778F 10292 bytes
SHA-256: c5eb40306b9519bb9f11bb7fa9a1d95a7dad3455aaefb3f806052f751eb37a98

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