Malicious PDF — malware analysis report

Static analysis result for SHA-256 c560c26051e709b6…

MALICIOUS

PDF

94.2 KB Created: 2021-03-15 04:22:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e624ccd6f7ace2e679566fd2ac18d165 SHA-1: 9fb19bee59ca07b10509e7c77b38b46701e751c9 SHA-256: c560c26051e709b698cde0f8b20a1e8691cf5c75d46a3a081c4f11de4d0a475f
176 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses a QR-code lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/wix?keyword=nuwave+36001+brio+air+fryer+manual+pdf PDF link annotation
    • http://fopekoriw.sportsontheweb.net/13597554191.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/idigTCF/btd6_wiki_rounds.pdfIn PDF document text
    • http://xodaxedepapopox.mygamesonline.org/27130880824.pdfIn PDF document text
    • https://tapuwapefozex.weebly.com/uploads/1/3/4/3/134350869/vibonosimegefupe.pdfIn PDF document text
    • https://cdn.sqhk.co/nunexijezep/QibBNan/wokifozebixabiguti.pdfIn PDF document text
    • https://fobamenowukar.weebly.com/uploads/1/3/4/4/134485242/zapejafizok-tezudade-tuwegevir.pdfIn PDF document text
    • https://cdn.sqhk.co/sogupavetut/J7jc3hj/37817127140.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/fimokewiwe.pdfIn PDF document text
    • https://tudisapa.weebly.com/uploads/1/3/4/6/134660317/77879715.pdfIn PDF document text
    • https://cdn.sqhk.co/kululojilo/Ogck7gd/cytus_2_neko_glitch_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/buzulexoxuve/jlhdhav/kezoxavezizakolisada.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/sazixipame/xipunufowemupuxoditi.pdfIn PDF document text
    • http://liroporuki.myartsonline.com/how_to_replace_battery_on_ipod_classic_30gb.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/city_car_racing_simulator_2018_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lupuvogotog/53579176946.pdfIn PDF document text
    • https://6cbe2f5c-748b-4bc6-b691-25a968a47885.filesusr.com/ugd/d6b5da_20167381646746a8a28b66bb63ba012a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rerinago/zipekikujiwefaxe.pdfIn PDF document text
    • http://rinimodosejowuf.myartsonline.com/garuka.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/78496605680.pdfIn PDF document text
    • https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_4ced87ec368c4696905d254eb8f5072c.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_off000129fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129FC 5884 bytes
SHA-256: 982cabfd14e035b762036a928e5f83580446cf470770743e415da909e5a6000f
font_01_sfnt_off00013e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E11 13976 bytes
SHA-256: 53d38d2e0df25447c4fcab48e2f45f4fe96beb4852bb829a39cfce5a069f235e

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