Malicious PDF — malware analysis report

Static analysis result for SHA-256 67915dfa1fe126cd…

MALICIOUS

PDF

79.1 KB Created: 2021-03-16 15:34:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ffb88f37ead4f451490ab1aadac368d3 SHA-1: 32e38015cd9be2cd92dd7eaf5022fad92fa347dd SHA-256: 67915dfa1fe126cd3d831a3e32f5a3c87cf814269e6da27d7a45efa6bae98791
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially malicious content. The document body, though heavily obfuscated, appears to be a lure for book downloads, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://lozipotod.ru/award?keyword=ashwin+sanghi+keepers+of+the+kalachakra+pdf+free+download PDF link annotation
    • https://cdn.sqhk.co/javeduner/gifgiQu/xobawitukomigujopidose.pdfIn PDF document text
    • http://woxijakuzadajew.getenjoyment.net/padel.pdfIn PDF document text
    • https://cdn.sqhk.co/kupulifip/hhjjcDI/xbox_series_x_black_friday_price_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/gcjidqN/horse_racing_games_pc_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/tonuviwa/jiXhgjj/abbreviated_electron_configuration_sodium_ion.pdfIn PDF document text
    • https://sididipukiwe.weebly.com/uploads/1/3/1/3/131398020/xagose.pdfIn PDF document text
    • https://zazivobonapi.weebly.com/uploads/1/3/2/6/132696398/mewejiri.pdfIn PDF document text
    • https://sunutefe.weebly.com/uploads/1/3/5/3/135350425/tekobenaxagur.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/jihjegi/sodonuvizuribiv.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/XghajgO/shooter_mcgavin_running_gif.pdfIn PDF document text
    • http://pazefezos.mywebcommunity.org/difference_between_quality_assurance_and_quality_control.pdfIn PDF document text
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/3743280.pdfIn PDF document text
    • https://cdn.sqhk.co/sifomujotaxa/5aZhgqf/fallout_shelter_pregnant_not_giving_birth.pdfIn PDF document text
    • https://cdn.sqhk.co/sirijunubi/dKuN0jc/susijejotarinobikafugo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://d89a15f7-21b5-45f0-b9b4-bc5b7be68842.filesusr.com/ugd/18e821_8a85202386a74628b93aec8c6cb2b8dd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/legipalofi/zutezojiwekuz.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/63864232644.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/usa_visa_lottery_application_form_2019.pdfIn PDF document text
    • https://ec560393-4650-4708-bf0c-d08fceb8458c.filesusr.com/ugd/ca69db_545501123ad641ad80e405934ac5f58a.pdf?index=trueIn PDF document text
    • https://9df6e0af-a028-4e88-91ba-61a1b37318d5.filesusr.com/ugd/7c1f05_b6c09c039a22441aa6de343d0ddeffaa.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e8f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F5 5352 bytes
SHA-256: 88cd5adcfff522219493f9f9798816a89eff5be5d477cb6da7dadc8fb4411941
font_01_sfnt_off0000fb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB22 11052 bytes
SHA-256: f3a2ddbbbc0ac3dc198fa4cd26c4702723607b8ccbb6a856503222a6788ce495
font_02_sfnt_off0001209e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1209E 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3