Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a20e6914c7f3d91…

MALICIOUS

PDF

82.8 KB Created: 2021-03-17 02:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 67a6edc2c4b20f8076fbe58d213191ee SHA-1: e1b491d8181d7c5bdb37ac8543bb0da5720f574d SHA-256: 7a20e6914c7f3d91196b7c1f87d14ed74ad4be76a28ce1f31cc79c6b96238446
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

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 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/wix?keyword=radio+shack+digital+multimeter+manual PDF link annotation
    • http://wedagumo.iblogger.org/adobe_photoshop_studio_free.pdfIn PDF document text
    • https://guzovadolo.weebly.com/uploads/1/3/1/6/131606502/20413ff5c7629.pdfIn PDF document text
    • http://rekugegik.scienceontheweb.net/office_building_plans.pdfIn PDF document text
    • http://koreatop.ru/24999023883jds.pdfIn PDF document text
    • http://julozagoren.22web.org/magic_bullet_mini_7_piece_set_200_watt_with_cross_blade.pdfIn PDF document text
    • http://luwinilulurop.mywebcommunity.org/chapter_3_settling_the_northern_colonies_multiple_choice_answers.pdfIn PDF document text
    • https://zawiwiguxasawum.weebly.com/uploads/1/3/0/7/130739629/9351e2fe4f0.pdfIn PDF document text
    • https://jepunitapo.weebly.com/uploads/1/3/1/0/131070437/kukosakagoduzorim.pdfIn PDF document text
    • http://jimubezisu.iblogger.org/40899652149.pdfIn PDF document text
    • http://gagivukamuw.getenjoyment.net/luwekalogemop.pdfIn PDF document text
    • https://legunumazonum.weebly.com/uploads/1/3/4/4/134455594/kinegel.pdfIn PDF document text
    • https://xibowawagapuj.weebly.com/uploads/1/3/1/3/131383975/6196310.pdfIn PDF document text
    • http://benosetib.iblogger.org/pobago.pdfIn PDF document text
    • http://goods-amzon.com/al_anon_12_stepsvvfmn.pdfIn PDF document text
    • http://sizegoduxuxa.mygamesonline.org/34079803264.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gobavaduxa.epizy.com/bed_bug_hotel_reports_north_carolina.pdfIn PDF document text
    • http://sefakifag.epizy.com/65180402223.pdfIn PDF document text
    • http://dujawupiraxep.rf.gd/12068509221.pdfIn PDF document text
    • http://bopisumeku.atwebpages.com/84073035.pdfIn PDF document text
    • http://fejasafevavo.epizy.com/marcelo_bielsa_book.pdfIn PDF document text
    • http://vafowoloxesimam.rf.gd/qiyana_guide_mobafire.pdfIn PDF document text
    • http://guzupuxidulijak.rf.gd/fairbrothers_textbook_of_bacteriology.pdfIn PDF document text
    • http://gerekuvuburase.epizy.com/getoguzonofig.pdfIn PDF document text
    • http://beruleruz.rf.gd/magazine_sample.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_off000102d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102D3 5424 bytes
SHA-256: 497b888af97484af842a1307989b66b71be1c6d6d6ebd3778b6d3b3bbfd2c721
font_01_sfnt_off0001151f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1151F 11368 bytes
SHA-256: 00d481392b0a816fac3ab0059a0ebcd60511c4022ae997d2f9c6de5ad2ef1518

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