Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0bc903c5562ee6…

MALICIOUS

PDF

87.3 KB Created: 2021-03-31 10:21:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7318240a4d5e26b41719dc315437f1 SHA-1: 8a914640108b1ce4c3af3ad4567204b5d4787ee9 SHA-256: 6a0bc903c5562ee6b962f91ca1e6aa4421cfece6e89302dff3d2aabbb773bebb
164 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. The document contains numerous external links, suggesting a link farm or phishing lure, with one URL specifically mentioning a product search term. The presence of embedded links and the 'Fake invoice / payment lure' heuristic indicate an attempt to trick the user into clicking malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://pelibifir.ru/strik?utm_term=garmin+forerunner+620+replacement+strap
    • https://cdn.sqhk.co/vopofuxo/Wpgdjjp/dj_name_mixer_application.pdf
    • https://sizasaligibi.weebly.com/uploads/1/3/4/5/134506534/kiwasasu-letusejawej-tidesifif.pdf
    • https://cdn.sqhk.co/zutijujes/Zifhcjb/nananod.pdf
    • https://cdn.sqhk.co/soxuvezosapa/8Akuie0/marvel_fluxx_card_game_rules.pdf
    • https://cdn.sqhk.co/dilobowuz/hfihgdI/55787783019.pdf
    • https://mipejefote.weebly.com/uploads/1/3/4/3/134356111/5661653.pdf
    • https://cdn.sqhk.co/folamudoj/hggfJgf/40321499741.pdf
    • https://cdn.sqhk.co/fuvebopeweb/egdhjM1/vocaleapp_cheap_international_calls_from_usa.pdf
    • https://dikugero.weebly.com/uploads/1/3/4/3/134356342/9b71e6b12a6.pdf
    • https://cdn.sqhk.co/xasakeza/ciijcWm/lyrical_video_maker_pro_apk.pdf
    • https://cdn.sqhk.co/nepusoliweda/dG1oifA/talifutarodudireju.pdf
    • https://cdn.sqhk.co/kugefiruxat/iJmjjig/download_call_assistant_fake_call.pdf
    • http://doxulim.iblogger.org/fruit_smoothies_good_for_weight_loss.pdf
    • http://wokelegekak.66ghz.com/75869896435.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://miwofalixi.rf.gd/pakug.pdf
    • http://levigorofelo.rf.gd/how_to_downgrade_ps3_firmware_4.84_to_4.82.pdf
    • http://pusonuduwixi.epizy.com/56803772838.pdf
    • http://nofaramubibuv.epizy.com/honda_lawn_mower_hrx217hya.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010726.bin
d8310c02f5e578fdcdacd9b2a00c0b5700291331f9e8a991e0329cf950614156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10726 5504 bytes
font_01_sfnt_off000119c1.bin
c23cef7584e13a056f4de4797f990c32a6800f610f1286453d56607f158cbcaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119C1 11644 bytes
font_02_sfnt_off00014158.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14158 4324 bytes

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