Malicious PDF — malware analysis report

Static analysis result for SHA-256 1be4842116ae6605…

MALICIOUS

PDF

73.2 KB Created: 2021-03-09 12:31:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: f6cb7ef621125337ccd60a2a01d40559 SHA-1: b7ae41c3a6923d78fd570429cbc7597bd6c971a8 SHA-256: 1be4842116ae6605e9d63e1e709c825688c22ee115fdad1ddc7ee5d2549ab872
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable hosting and employing UTM parameters, indicative of a link farm designed to redirect users. The presence of these URLs suggests the primary intent is to drive traffic to malicious sites, likely for phishing or malware distribution.

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://botokaw.ru/strik?utm_term=find+the+seventh+day+adventist+church+of+the+oranges PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476936/normal_602bf09cd6c29.pdfIn PDF document text
    • https://cdn.sqhk.co/nemoludajedu/ZTia4e8/drift_ride_apk_mod.pdfIn PDF document text
    • http://garantiya62.ru/craftsman_router_and_router_table_combo_lowes1f6gp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484990/normal_60144844d3c68.pdfIn PDF document text
    • https://cdn.sqhk.co/gusisitixinu/jiPj0Pb/jomofularu.pdfIn PDF document text
    • http://ig-about.net/wexiwopariccs4p.pdfIn PDF document text
    • https://cdn.sqhk.co/rawerusiwala/hdijjgg/93912777551.pdfIn PDF document text
    • https://cdn.sqhk.co/xefanujere/MgfgcnB/totokolutosutegivo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501029/normal_5fd67928b44de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471703/normal_5fdb7ddfe618f.pdfIn PDF document text
    • https://cdn.sqhk.co/dederubap/b3jghbl/ice_cream_roll_machine_price_in_nepal.pdfIn PDF document text
    • http://alcozerox.com/9071313411129jne.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/jhgjVaD/rosunezifazire.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxowowi/ehPjjgj/bypass_lock_screen_on_iphone_xr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401973/normal_5ff898c71eeb1.pdfIn PDF document text
    • https://cdn.sqhk.co/miwurazaz/vCiiwc2/cool_ringtones_for_phones.pdfIn PDF document text
    • http://7gusevshop.space/bivubigitedir3o4jn.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/wopari/xapijeka.pdfIn PDF document text
    • https://s3.amazonaws.com/verirejon/gaming_tablet_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b9978d2-f156-470e-b7e1-1289a5cbe105/sojatiwodazigumasoj.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/darksiders_3_ps4_trophy_guide_and_roadmap.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/baubax_2._0_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c39efc-2230-492a-bf96-84cd1c512289/is_2500_calories_too_much_to_lose_weight.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/entrenamiento_alevin_futbol_7.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_off0000e054.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE054 5368 bytes
SHA-256: 63cd66bcf1a5363890b1ca7fdb012272c9748ace4892a8cd73e2cbee58b1d21c
font_01_sfnt_off0000f2a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A8 10500 bytes
SHA-256: a3e7666e11c1c27d35497b89f763bbe99e8b26d368245446acdcbff9c321c488

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