Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2287ae8b6f501ea…

MALICIOUS

PDF

83.3 KB Created: 2021-03-21 05:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 49e4f0dc16e91b03599b2be8647b990f SHA-1: 97a6fc8c4e4f577148124953cc449a4a8e066d4b SHA-256: a2287ae8b6f501ea097436b946b5a7c408680ea848b2d172724d0d1d96a26717
156 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 0.9990

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://vilenefex.ru/123?utm_term=background+music+piano PDF link annotation
    • http://driveformclanemilwaukee.com/kinagujebaq6wq.pdfIn PDF document text
    • https://cdn.sqhk.co/sinewuvemomi/figifhc/guwefemiro.pdfIn PDF document text
    • https://cdn.sqhk.co/rexukewanej/bmicgg6/28009976903.pdfIn PDF document text
    • http://yandex-delivery.cc/77253925629yzr82.pdfIn PDF document text
    • http://operationhomeplate.com/google_search_history_delete_all_my_activity3xduj.pdfIn PDF document text
    • https://cdn.sqhk.co/sipobufiw/jdjfjhA/bepiluxuzawapomajuzafezo.pdfIn PDF document text
    • https://cdn.sqhk.co/nanijamu/jgOhiG9/16063861209.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/nawuvud/what_types_of_intermolecular_forces_are_found_in_co2.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/13619544333.pdfIn PDF document text
    • https://3a0d5408-2ea1-4258-8d29-5d96341cad2c.filesusr.com/ugd/79cb75_e1a9117db58d49b199cbbf94e2d52175.pdf?index=trueIn PDF document text
    • https://1c437d0a-cccb-4a8a-93f1-39e0b5126915.filesusr.com/ugd/b91566_3f2999969c874fb2a436cef62e288493.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gebukil/dixaz.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/93926104975.pdfIn PDF document text
    • https://7ef7ebf0-bcb0-4ca2-8538-5a19c3e9f01c.filesusr.com/ugd/aff7ca_698aa92099fa4c3fb1defecdb6f490af.pdf?index=trueIn PDF document text
    • http://tujefozumuresul.epizy.com/cv_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/54569392529.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/16377263152.pdfIn PDF document text
    • http://zigetolerup.epizy.com/c_language_tutorial_in_telugu.pdfIn PDF document text
    • http://juxudawalugevop.epizy.com/chakram_malayalam_movie_songs_free.pdfIn PDF document text
    • https://b1c30c75-ab46-439a-884d-3836ae4b8a49.filesusr.com/ugd/2d1648_2dc3e9f6373c4913a1bd3ef05341864e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lumixi/34827200962.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/70280414980.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/what_is_the_starting_salary_of_indian_air_force.pdfIn PDF document text
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_83d9d4b859ea4a96a775fec763142313.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/20505651328.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f220.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF220 5472 bytes
SHA-256: 518ee322eb238131ffed21a32c39c6b541932aa0b2172e876a3efc00e8246c0b
font_01_sfnt_off000104ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AE 11196 bytes
SHA-256: ee374ccb9f01756a3136e51599eb2a5aebb812f9f3d5cd21f2690b3d097de4de
font_02_sfnt_off00012a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A93 16100 bytes
SHA-256: b59afbb2f683942213df284fd86cd9422ada0c5f1ffac7698db8c94a40390bc4

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