Malicious PDF — malware analysis report

Static analysis result for SHA-256 be247c2f65dc992f…

MALICIOUS

PDF

70.5 KB Created: 2021-02-08 05:06:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: becdfddac455c276e9f0017d4879f068 SHA-1: dd0b04e46fb607670f62327d7dc192a414ee0a82 SHA-256: be247c2f65dc992f2b6f943d3bac042ebdced4dd46979d62f5f1805c255e3bae
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/aws?utm_term=bts+persona+album++k2nblog PDF link annotation
    • http://ashotik.space/komogc6gey.pdfIn PDF document text
    • https://cdn.sqhk.co/kiraxozi/g58Lqif/nimig.pdfIn PDF document text
    • http://twirlini.com/chota_bheem_cartoon_movie_tamil2sg0f.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/kagunelagikive.pdfIn PDF document text
    • https://mitiguranam.weebly.com/uploads/1/3/4/4/134456526/jejejofuxuxo.pdfIn PDF document text
    • https://popetufuwude.weebly.com/uploads/1/3/1/4/131483025/nuzaroke.pdfIn PDF document text
    • https://tojumofudino.weebly.com/uploads/1/3/2/6/132681199/kovatowerijer.pdfIn PDF document text
    • http://easterthjg.com/16092478102zmwf0.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/cUZKms3/50516892737.pdfIn PDF document text
    • https://zebonusifok.weebly.com/uploads/1/3/4/5/134509505/demugizujagiwadale.pdfIn PDF document text
    • http://mavito.online/dark_side_lyrics_museb4cxt.pdfIn PDF document text
    • http://wide-take.top/shazam_lite_apk_20202qit1.pdfIn PDF document text
    • https://bubebozozuj.weebly.com/uploads/1/3/1/8/131871643/6cf90.pdfIn PDF document text
    • https://dinijituwit.weebly.com/uploads/1/3/1/6/131606252/b3f2989edfe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pajinofemi.epizy.com/bestwap._in_movie_2018_sauth.pdfIn PDF document text
    • https://s3.amazonaws.com/bolovopizonuki/92480836873.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/nejawovojepeba.pdfIn PDF document text
    • http://jefevuxivux.epizy.com/bavabuxubebirufitovo.pdfIn PDF document text
    • http://jidafamibudajir.epizy.com/angular_material_registration_form_template.pdfIn PDF document text
    • http://kowewewabozete.epizy.com/python_twisted_documentation.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_off0000c182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC182 5996 bytes
SHA-256: 04844f332cd6a7ae5c7045bd16cf1824568b75c42e3fbcc52a0fff16e17743d4
font_01_sfnt_off0000d62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62E 5524 bytes
SHA-256: b9494d3ef9abac363aff5cd17dcdd48c8aa66b104f94b81d8a7c2c4fb559c45b
font_02_sfnt_off0000e8e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E5 10320 bytes
SHA-256: 2ad4227b3a80ed77c58b90078d6709f36c8eed62d7c2f0f334ceffef61bff52a

Open this report in the interactive analyzer, or submit your own file for analysis.