Malicious PDF — malware analysis report

Static analysis result for SHA-256 8475f097b0120f51…

MALICIOUS

PDF

69.4 KB Created: 2021-02-27 20:59:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: aab21e2e98bb8c634443ecc96f68ede1 SHA-1: c4cf9baec2faace18b82ef6e181b38b29e05de78 SHA-256: 8475f097b0120f5163ed3ce5731cfd63051318ca2478049ebe81d97bb2f679fa
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for phishing or distributing malware. The heuristic PDF_SEO_LINK_FARM indicates a large number of links, and the ClamAV detection as Pdf.Phishing.Trojan suggests malicious intent. The document body, though heavily obfuscated, contains text related to search terms, reinforcing the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/strik?utm_term=navy+seal+museum+fort+pierce+florida+directions PDF link annotation
    • https://cdn.sqhk.co/sejiragidu/aHih6jj/diversity_and_inclusion_policy_examples.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/euNdAJp/85779978049.pdfIn PDF document text
    • http://sberbank.services/android_9_pie_update_for_redmi_y2uhe2s.pdfIn PDF document text
    • https://cdn.sqhk.co/kepigofunet/jhfQ3Ss/63194211553.pdfIn PDF document text
    • http://front-glass.website/puvewaweuh8hg.pdfIn PDF document text
    • https://cdn.sqhk.co/notizejamebo/zjiwhc8/21956721198.pdfIn PDF document text
    • http://gloslides.com/the_masque_of_the_red_death_prince_prospero_quotesegm1c.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/1oWS1yH/atomic_fighter_bomber_apk.pdfIn PDF document text
    • http://myfirstsite.xyz/96843167530k0qnm.pdfIn PDF document text
    • https://wuriwodek.weebly.com/uploads/1/3/4/6/134688082/3207950.pdfIn PDF document text
    • https://cdn.sqhk.co/tolademapati/WTfchbH/hot_wheels_id_portal_charging.pdfIn PDF document text
    • https://cdn.sqhk.co/jurugaguvedu/jsthcB6/hot_wheels_infinite_loop_ios_download.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/2jeWPgc/new_york_post_store_phone_number.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jijari/borges_y_yo_jorge_luis_borges.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/ornament_and_crime_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/biodata_format_for_marriage_free_word.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_off0000d3a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A4 5432 bytes
SHA-256: 18f064409bd56e530bcafd8ce55298b5b3415673ea9eb5b80c8f8197e631c3ee
font_01_sfnt_off0000e61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61E 10120 bytes
SHA-256: 41786e7bc46ef1a212569b87a5c1c7ced3929f0f3ec4a5fd32044c9d27ae3a8a

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