Malicious PDF — malware analysis report

Static analysis result for SHA-256 b14479892e062ce3…

MALICIOUS

PDF

74.7 KB Created: 2021-02-25 13:42:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 2b9f4c68d7e99bc51a84628ab1574ff5 SHA-1: 94759597dfbea2e22c71ff6133abeef8f2a8870f SHA-256: b14479892e062ce3608eda144e48ac92c6b183c7790e97ed10fde4d49f4e51bb
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one pointing to a suspicious domain ('jottigo.ru') that is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for numerous links, further supporting malicious intent. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://jottigo.ru/award?keyword=hp+laserjet+pro+400+m451dn+toner PDF link annotation
    • http://afracheat2.xyz/what_is_the_permit_number_on_a_drivers_permit_illinois0g3yx.pdfIn PDF document text
    • http://espacecmb.xyz/50124857539e0f8i.pdfIn PDF document text
    • http://wordsideget.top/prentice_hall_algebra_2_online_textbookaqa0c.pdfIn PDF document text
    • http://emmetrix.net/19597039149yuwuz.pdfIn PDF document text
    • http://sell-toclick.online/annihilation_of_caste_full_bookmozgd.pdfIn PDF document text
    • https://cdn.sqhk.co/niripakexad/fTPjj0y/nalabowotugesebe.pdfIn PDF document text
    • http://2220202.ru/adobe_character_animator_2020_system_requirementsfy641.pdfIn PDF document text
    • http://italdom.fun/raging_bull_big_and_tall_size_guidetgjmk.pdfIn PDF document text
    • https://cdn.sqhk.co/jigixomavola/fqcfriE/54112618584.pdfIn PDF document text
    • http://govnososal.xyz/Dutch_audio_tracks_for_moviesb40rd.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/janodojivi/20499105123.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/44604777449.pdfIn PDF document text
    • https://s3.amazonaws.com/libosokune/contact_lens_fitting_guide.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_off0000e788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE788 5548 bytes
SHA-256: 8a9d715e9d30492d6b50e9fed4ac1ec07c6289887154ade9da6d567e5fac39e5
font_01_sfnt_off0000fa5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5E 10336 bytes
SHA-256: cec674f2f4df70bf31ceb4686c1d57699361f288290395ca11150f87ceb2ae4a

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