Malicious PDF — malware analysis report

Static analysis result for SHA-256 e10114729d2052fb…

MALICIOUS

PDF

67.8 KB Created: 2021-01-03 05:46:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 168ea4baaf648737c53f4cf9c0d1e01a SHA-1: 73a6cdf4936dbaa8a578c3f8ea46566e7719bed4 SHA-256: e10114729d2052fbd021ed3aae623cc4f739fed1a413943f1b5b1851894fb17c
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with several pointing to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary attack pattern involves luring users to external sites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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/123?utm_term=instyler+rotating+iron+max In PDF document text
    • https://cdn.sqhk.co/zixemoliz/jfLAegd/kolunexi.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/igDdiya/13851342181.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/tgiieFt/torasosolulakel.pdfIn PDF document text
    • https://cdn.sqhk.co/girewobo/chjheha/maworugukosutajat.pdfIn PDF document text
    • https://fuzuvetidodevik.weebly.com/uploads/1/3/4/6/134637128/70960e8.pdfIn PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/wasegibufolej.pdfIn PDF document text
    • https://cdn.sqhk.co/xolilipedeko/jfibhi6/ticket_to_ride_game_board_dimensions.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/eTIqgjb/kajoletozuwoz.pdfIn PDF document text
    • https://piwixejiwos.weebly.com/uploads/1/3/2/8/132815196/6ce0f2d.pdfIn PDF document text
    • https://fuxogadukuka.weebly.com/uploads/1/3/4/6/134688721/pemexob_gubofewilefeki_giviviminajetix_wasinokefo.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/nuxulikiwab/20379431391.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56206a5-fd4f-4876-af8a-3b108f3d0b4d/13635958602.pdfIn PDF document text
    • https://s3.amazonaws.com/fifomi/balaji_aarti_song.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_off0000cd5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD5E 5112 bytes
SHA-256: 490b1e5aecb9fe9addaad0e0360b378e6cc3521d23bcac003badb2c982174b30
font_01_sfnt_off0000debe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBE 10524 bytes
SHA-256: f70bdabbe6a81a1ca05d3ccdc7d967bc7a0de96811231877c9e7d31cea334dfe

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