Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa6d1e5a8949f7ba…

MALICIOUS

PDF

83.3 KB Created: 2021-05-02 12:37:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f02019dedf19df927c887eb11aa07e6e SHA-1: 45234a005e2084ccd4c87ba6ecfcbb863a26d7f0 SHA-256: fa6d1e5a8949f7ba616902374a96a58617329ad753122bf538eb6c7849c7689c
186 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including external URI links and a link farm on disposable hosting. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF. The presence of 'cMDicic/funny_orange_names.pdf' and associated Weebly URLs in the document text suggests an attempt to disguise or deliver a payload, likely through a link that would execute or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/strik?utm_term=forex+trading+tutorial+in+hindi PDF link annotation
    • https://cdn.sqhk.co/wukegotubujo/icgg8rf/88753507438.pdfIn PDF document text
    • http://studytogether.fun/vow_of_nonviolence7aroe.pdfIn PDF document text
    • https://bomevalaruzaf.weebly.com/uploads/1/3/4/8/134871705/jisememakugojef-vipijiranibo.pdfIn PDF document text
    • https://cdn.sqhk.co/duravukikemo/Amgiiaf/peer_gynt_suite_no._1_sheet_music.pdfIn PDF document text
    • https://kisuwirabavaruz.weebly.com/uploads/1/3/3/9/133999170/rodidumapinakoz.pdfIn PDF document text
    • https://cdn.sqhk.co/xibidodoko/RCvrhci/at_t_device_help_app.pdfIn PDF document text
    • https://gitutibilaralib.weebly.com/uploads/1/3/1/3/131384503/3338407.pdfIn PDF document text
    • https://nituxokijawagez.weebly.com/uploads/1/3/0/9/130969825/mabuj_xitulagijo_zijirevanesodox_rusefopaba.pdfIn PDF document text
    • http://conicppjry.bid/cognitive_psychology_focuses_on_studying_genetics_and_the_effect_of_genetics_on_behaviorpjygg.pdfIn PDF document text
    • http://tramlaweq.online/think_tank_ka_meaning_hindizeyk7.pdfIn PDF document text
    • http://elerctum.org/81215844700zfxgt.pdfIn PDF document text
    • https://sekitajed.weebly.com/uploads/1/3/1/3/131383533/kilufemipojotivovu.pdfIn PDF document text
    • https://cdn.sqhk.co/mikedeto/cMDicic/funny_orange_names.pdfIn PDF document text
    • https://nowujokawaj.weebly.com/uploads/1/3/4/6/134676947/wolosakokemen_gelufovagori_sexalusozajop.pdfIn PDF document text
    • https://taxesewisozigif.weebly.com/uploads/1/3/5/3/135394589/8b8bba5d91ca7.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/ninilevikod/eEjdeU1/investigatory_powers_tribunal_annual_report.pdfIn PDF document text
    • http://wifonivibigi.22web.org/embrace_pet_insurance_claim_form.pdfIn PDF document text
    • http://supportcopyright.net/how_many_btu_is_a_3_ton_furnacepp00r.pdfIn PDF document text
    • https://nowujokawaj.weebly.coIn macro / runtime command snippet
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_78b629ca224744b5b3f58effe24c5bac.pdf?index=trueIn PDF document text
    • http://devagejoga.rf.gd/81524951660.pdfIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_15a6ca0100ab4faab59216f0c613b5f1.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010789.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10789 4932 bytes
SHA-256: 317a0696f611d8e467029e626a2881daca182cdb93f28d812d2c2278009e8307
font_01_sfnt_off00011851.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11851 11260 bytes
SHA-256: 1e5f33cc2781266a16767cc625392f49cbbe0daaa2d970a618e8b0eae787ca74