Malicious PDF — malware analysis report

Static analysis result for SHA-256 977ec900a2507709…

MALICIOUS

PDF

98.3 KB Created: 2021-02-27 20:49:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7a2932935dd0c74fb47a92ed70af8cee SHA-1: f78d883b14b7309ff10587508189a162e1f47e98 SHA-256: 977ec900a25077090676f79c15b8b8ba19181657810f50618dae0b32c64f20ec
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a primary one pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to insurance, aligning with a potential lure for phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://fokemale.ru/wix?keyword=affidavit+of+no+additional+insurance PDF link annotation
    • http://usacreditreport.info/water_resources_and_irrigation_engineeringehd34.pdfIn PDF document text
    • http://skidki-day.site/ek_baar_aaja_aaja_song_djpunjabjusr0.pdfIn PDF document text
    • http://ccckkkkk.space/a_swiftly_tilting_planet_reading_levelfkfg9.pdfIn PDF document text
    • https://japugaze.weebly.com/uploads/1/3/5/2/135295186/0f528.pdfIn PDF document text
    • https://tojaxufuvubugo.weebly.com/uploads/1/3/4/6/134641466/3408904.pdfIn PDF document text
    • http://arthromedshop.xyz/facebook_lite_update_version_2019914vh.pdfIn PDF document text
    • https://weranatowo.weebly.com/uploads/1/3/1/4/131408071/724123.pdfIn PDF document text
    • https://dufavepuxafolim.weebly.com/uploads/1/3/4/2/134266173/gubazigipazu-rifefewo-zitowom.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/nibewedebasug.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/judomalodupisanesawavaxa.pdfIn PDF document text
    • https://pumagawiluzade.weebly.com/uploads/1/3/4/6/134697536/381c4041fda.pdfIn PDF document text
    • http://domsale.xyz/91816201266xf7be.pdfIn PDF document text
    • https://fojumujitugesi.weebly.com/uploads/1/3/4/6/134688065/dowijupiribit.pdfIn PDF document text
    • http://prizinsta.info/sagujubogaxemibupk7jg2.pdfIn PDF document text
    • http://hq-cleartv.info/retulusesupefegojuniwuc6gbd.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/lazesej/bosch_fridge_freezer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/supefujoxopubu/can_i_use_my_mirrorless_camera_as_a_webcam.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/how_to_replace_battery_on_ipod_classic_30gb.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/bug_report_template_in_software_testing.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/pubg_mobile_emulator_aimbot.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_off00014561.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14561 5064 bytes
SHA-256: d46779c79d5300bf043ae8e7366cd82dc1f53f5d10f96124872c6fbf60704e41
font_01_sfnt_off000156b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156B4 10808 bytes
SHA-256: 7c9c8f4454bbbb9de3d6421c25c5a3396d3d238dd6acba53bebe1c61de2a8d95

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