Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee614a0e3c42c96…

MALICIOUS

PDF

79.9 KB Created: 2021-03-24 04:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b43e4693cb29a499802312285564778 SHA-1: d7b4f293931bb1d4b398474c72f120edad5a6854 SHA-256: 9ee614a0e3c42c96b7b2fdfd6c99a7e498614b69c95eeb017c2d272c1ec443b0
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing campaigns. ClamAV and ML classifiers identified this PDF as malicious, specifically a phishing trojan. The embedded links, such as the one referencing a 'car seat recall', are designed to deceive users into clicking through to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/aws?utm_term=safety+1st+alpha+omega+elite+sophomore+car+seat+recall
    • https://cdn.sqhk.co/neviragar/ggbjhjG/86687256403.pdf
    • https://tanaxigurav.weebly.com/uploads/1/3/4/2/134266775/taxupetuzex.pdf
    • https://weduparazibad.weebly.com/uploads/1/3/4/7/134710999/1669905.pdf
    • https://webebusili.weebly.com/uploads/1/3/0/9/130969565/8c463ef22.pdf
    • https://mogopefisumiba.weebly.com/uploads/1/3/5/2/135295831/3414884.pdf
    • https://vigenuwotefi.weebly.com/uploads/1/3/4/0/134012497/puralan.pdf
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/bosejagom-mojefubipokebew.pdf
    • https://gajegebukorivip.weebly.com/uploads/1/3/4/4/134487765/4590554.pdf
    • https://cdn.sqhk.co/zikonidenijo/niga3gc/slo_mo_camera_app_download.pdf
    • https://cdn.sqhk.co/fijajiles/NZieial/bleach_mobile_3d_mod_apk_unlimited.pdf
    • https://tarumunapuwogu.weebly.com/uploads/1/3/4/4/134481002/5301952.pdf
    • https://figinesixixe.weebly.com/uploads/1/3/3/9/133999389/4301965.pdf
    • https://riluvozig.weebly.com/uploads/1/3/4/3/134380056/9728556.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/niwotipugonuvoz/uc_browser_9._5_java_jar.pdf
    • https://uploads.strikinglycdn.com/files/93456255-5523-4e7a-a6ca-93eb9c34a4e0/carl_sagan_cosmos.pdf
    • https://uploads.strikinglycdn.com/files/ab40b9d1-a002-4d6f-a96a-dcce67752111/sharp_clock_manual.pdf
    • https://s3.amazonaws.com/wofaxil/dajusozadira.pdf
    • https://s3.amazonaws.com/widuxade/ps_vita_gamestop_games.pdf
    • https://uploads.strikinglycdn.com/files/71fafea2-805b-4e4f-a4c9-3b517d1e0c4a/leather_carry_on_luggage_with_laptop_compartment.pdf
    • https://uploads.strikinglycdn.com/files/7b576455-06bb-4e7a-8b06-71662a261952/zoxokakori.pdf
    • https://uploads.strikinglycdn.com/files/f5fd8f21-7543-4b21-b5b2-49a16dfb489c/where_to_buy_a_rebuilt_transmission_near_me.pdf
    • https://s3.amazonaws.com/taguxif/buwapu.pdf
    • https://s3.amazonaws.com/wutezigojuxi/certified_copy_of_corporate_resolution_template.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f711.bin
5989d4e9fa8a484529244dca8b13becba993bd3cb82ae062e624235f3a3ddcf6
pdf-font-stream PDF embedded font (sfnt) at offset 0xF711 5688 bytes
font_01_sfnt_off00010a5c.bin
ed0eeaaa0ccf21ab542295beb80edbd249fc24ac92aa02e874bda122595f8ee8
pdf-font-stream PDF embedded font (sfnt) at offset 0x10A5C 11760 bytes