Malicious PDF — malware analysis report

Static analysis result for SHA-256 db686feb54b28500…

MALICIOUS

PDF

62.4 KB Created: 2020-12-11 12:37:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4ce5f9987dffdea2826929feebdf9e55 SHA-1: 09758e150095b8bbcd9045d44878c372077ca3d6 SHA-256: db686feb54b28500404115fbc320087b2e7a6a8120ca8aba6067ff5c83ed3eea
156 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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://trafftec.ru/aws?utm_term=rhinestone+cowboy+ukulele+chords+pdf PDF link annotation
    • https://foposivore.weebly.com/uploads/1/3/4/4/134472686/vudirego-mibefevir-jakun.pdfIn PDF document text
    • https://ruxapumuful.weebly.com/uploads/1/3/4/6/134682584/lufezaxaxuduta.pdfIn PDF document text
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/3a9e48.pdfIn PDF document text
    • https://tukobigerokigab.weebly.com/uploads/1/3/4/6/134653943/tabosajewejajunugap.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/97a60141-ac3f-4029-84d4-848c5901a7c3/letinazafe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc169478139af037648d9ed/t/5fc976a1634f6910fb4621cf/1607038626378/26497864679.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0187aa5bc066edfa15e28/t/5fc127e0bc819f1cf401791a/1606494176077/vhlcentral_answer_key_spanish_1_lesson_2.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4ef808845d092480d7e0/1606373112984/wutoradataziberikega.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e8580a2757459be2e8d5/t/5fcd7592cded405bb8ee17bc/1607300499421/horizon_fcu_williamsport_hours.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2ca3a3dfdd95b60e15de0/t/5fc3b5d37acac6192a31aa85/1606661588089/gomusuwidokixapukukaja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5f65761-7313-4207-90b2-2d1bc62826f7/xibesa.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cf3a5e8e827d428d5c84/t/5fc164b23c02f22b9d415ffb/1606509748082/suspicious_looking_eye_calamity.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5bdbecd1e280355f55b36/t/5fd095125ec17a4c6694ac1a/1607505171874/bmx_bike_race_mod_apk_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b39b727e-f2be-4eb1-8613-07e4b56b94f0/acnl_coffee_guide_isabelle.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1e9b9b7bfd15107caaed/1606229660433/gukalopiso.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cbd3ea4a794d56447cee/t/5fc51632cb3e0f5771f109bc/1606751794938/57899639279.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10ec41c8c74131432ae85/t/5fcfac9857846c5b8360b3dd/1607445656445/rijafopekuparasulavixu.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_off0000b736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB736 5440 bytes
SHA-256: 6f47c63f4dd0891abb2edd4b198ab81a7ac9b87fd55e3258b619e31c82b38b33
font_01_sfnt_off0000c9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C7 10204 bytes
SHA-256: 2dc4e1b7b91b87309d2fb374c749bd4a7146210a5e534342e7e1a30fcaf89efc

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