Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e7b0369a6792f8f…

MALICIOUS

PDF

81.8 KB Created: 2021-03-15 20:59:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ff8cbec0b6430de6068e64eecc47875b SHA-1: 90fdfebf45bdd5e6084c6d26eb9a161412d1ad97 SHA-256: 6e7b0369a6792f8fc3557b7fb6fa4ad09f816e67da487881274d764714327852
164 Risk Score
Tags
free-cdn-ebook-manual-lure

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. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=books+for+learning+english+pdf+free PDF link annotation
    • http://womizepivilora.sportsontheweb.net/tactics_for_toeic.pdfIn PDF document text
    • http://pawomodom.medianewsonline.com/whirlpool_fridge_service_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/pitekofotada/v2hhAjh/velexuvezukori.pdfIn PDF document text
    • https://cdn.sqhk.co/jevamivuvugi/hfTTgjc/the_ants_go_marching_instrumental_youtube.pdfIn PDF document text
    • https://senuwisaf.weebly.com/uploads/1/3/4/0/134018119/42e5bc328a5c9dd.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/35197266950.pdfIn PDF document text
    • https://larulevi.weebly.com/uploads/1/3/6/0/136004384/rukipulodokeru_ditojanotojenun_zexigolejiwe_dafujilerulekaz.pdfIn PDF document text
    • https://cdn.sqhk.co/jimavidozeze/V0ahfjd/70194699635.pdfIn PDF document text
    • https://guzajemifuraruv.weebly.com/uploads/1/3/0/8/130874286/8231887.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/murudute/nadofupipuni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/758798b0-470d-4e4a-87a9-f5372229d7c9/93976482407.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4f508be-2ce7-4f01-9303-e03779316dc0/how_to_remove_a_white_rodgers_thermostat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fae4fff-7f06-4f87-9095-87418622b11d/55681110198.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/16172493747.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/jamavafatadi.pdfIn PDF document text
    • http://goxafebo.myartsonline.com/74000751100.pdfIn PDF document text
    • https://s3.amazonaws.com/lakujusitejojet/wegidonilosak.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/xakazanokazufikobediz.pdfIn PDF document text
    • http://ligekasuxube.onlinewebshop.net/40371002797.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/does_the_corsair_commander_pro_work_with_other_fans.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/72583934279.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 5416 bytes
SHA-256: 70afd65d03946dc8ee228274d15957c160884da188d0b2ae3675b11ce7e52ba8
font_01_sfnt_off0001048d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048D 3484 bytes
SHA-256: be2e3595ff4efc4ae89d0d533636aeb5852c9803a6a4740b0821b40a29a9485d
font_02_sfnt_off000111dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111DC 11072 bytes
SHA-256: 26a4279bc9ae38353157b489331db85398e1d3556392fa68fbb3f3ed51de4bfa

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