Malicious PDF — malware analysis report

Static analysis result for SHA-256 832a3e711be59211…

MALICIOUS

PDF

82.5 KB Created: 2021-06-06 11:17:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7c8db98cdb70d83b996b112bcad914f5 SHA-1: 121d5f6d419c12ae67298b4844a3b50b6d49b747 SHA-256: 832a3e711be5921138c6a10903f843e6c2654e373a0a23d38411b8a847c8810e
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The presence of a 'bazaar full movie' lure in one of the URLs indicates a potential phishing or malware distribution attempt. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://xezojetit.ru/123?utm_term=bazaar+full+movie++300mb PDF link annotation
    • https://ramemegu.weebly.com/uploads/1/3/1/3/131383760/4823729.pdfIn PDF document text
    • https://voviteri.weebly.com/uploads/1/3/4/9/134904749/pebad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490375/normal_60469aefedaf3.pdfIn PDF document text
    • https://xiwotedusogatif.weebly.com/uploads/1/3/0/7/130775269/5029554.pdfIn PDF document text
    • https://finibolamojirum.weebly.com/uploads/1/3/5/3/135341575/4211797.pdfIn PDF document text
    • https://sesumevikenaful.weebly.com/uploads/1/3/5/3/135346106/c20507d0546b.pdfIn PDF document text
    • https://jonapofa.weebly.com/uploads/1/3/4/6/134699055/5806324.pdfIn PDF document text
    • https://lafupoboj.weebly.com/uploads/1/3/1/8/131857117/8547777.pdfIn PDF document text
    • https://lujogome.weebly.com/uploads/1/3/4/6/134617312/gamojob-tojopedagusug.pdfIn PDF document text
    • https://guliwomijura.weebly.com/uploads/1/3/4/8/134846957/4435914.pdfIn PDF document text
    • https://ledijonag.weebly.com/uploads/1/3/4/6/134689342/vumavano_nexarur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365545/normal_5fe51721b371f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_5fdc130ed7d68.pdfIn PDF document text
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/zekeja.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifimoruzuwo.pbworks.com/f/how_to_make_charcoal_briquettes.pdfIn PDF document text
    • http://viluxese.pbworks.com/w/file/fetch/144686826/97607130505.pdfIn PDF document text
    • http://wisarazed.pbworks.com/w/file/fetch/144617583/kezusiditefevafevage.pdfIn PDF document text
    • http://nusometa.pbworks.com/f/gta_v_money_cheat_ps4_story_mode.pdfIn PDF document text
    • http://nipekari.pbworks.com/f/15492598682.pdfIn PDF document text
    • http://zulamiz.pbworks.com/f/sukofokipefisufezarevogeg.pdfIn PDF document text
    • http://buvavipoluvu.pbworks.com/w/file/fetch/144658482/standar_auditing_aaoifi.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/f/48648104182.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000efb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB6 5340 bytes
SHA-256: 82671dba73d2feeb4920de4bdc67db5150ba6eaf499eb7e0d429df4efb0f08b3
font_01_sfnt_off000101dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DD 10980 bytes
SHA-256: 3cbbc3a5be9f26799b3aea86ede327e981a23022bcc002ab560c21337a44657f
font_02_sfnt_off00012794.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12794 16168 bytes
SHA-256: bcfecb9fde4b74e4a2b692e15caf305b2988a1cfe4c6386614002e38d35feb86