Malicious PDF — malware analysis report

Static analysis result for SHA-256 cad3457417e274e2…

MALICIOUS

PDF

86.9 KB Created: 2021-03-18 16:51:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 0412361007f338987f330c9fd652b86a SHA-1: 6fca6a7abbab1481c2e9d66097fd7ab763d6814f SHA-256: cad3457417e274e2934f98db6cac2067379d2d8171578bc2835e35cdbb59b808
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, identified as a link farm, with the primary URL being `https://botokaw.ru/strik?utm_term=dnd+5etools+warlock`. This behavior, combined with ClamAV and ML classifier detections, strongly suggests a phishing or malware distribution attempt. The file likely exploits a PDF vulnerability to redirect the user to malicious content.

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://botokaw.ru/strik?utm_term=dnd+5etools+warlock PDF link annotation
    • https://cdn.sqhk.co/gepabafi/ljfSjdM/31649931344.pdfIn PDF document text
    • https://cdn.sqhk.co/demejapad/cEfjggc/sonny_bono_net_worth_at_death.pdfIn PDF document text
    • https://cdn.sqhk.co/vopufepivipe/CaeFQha/crazy_birds_fabric.pdfIn PDF document text
    • https://cdn.sqhk.co/xanapaje/1Ju3jgc/mesusan.pdfIn PDF document text
    • https://cdn.sqhk.co/givikufat/ezjfUgi/invaluable_synonym_business.pdfIn PDF document text
    • https://finolija.weebly.com/uploads/1/3/4/6/134625313/gitexir-xitagolivi-rofalexezeloze.pdfIn PDF document text
    • https://sanofawuvi.weebly.com/uploads/1/3/4/5/134588151/linitesag_wudide.pdfIn PDF document text
    • https://cdn.sqhk.co/bizewavaxug/ylOpnhi/illinois_pharmacy_self-_inspection_report.pdfIn PDF document text
    • https://cdn.sqhk.co/nodewanase/cb2jaXU/tropico_5_review_indonesia.pdfIn PDF document text
    • https://cdn.sqhk.co/kusedesomawa/OThgeTV/54534853234.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/djg0jSQ/sonnys_place_halloween.pdfIn PDF document text
    • https://jurulekoteg.weebly.com/uploads/1/3/4/7/134700509/jomas.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/hjiejcS/flight_simulator_2018_hack_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pimibopugugo/hgjrhaS/usf_business_administration_degree_requirements.pdfIn PDF document text
    • https://buralekareze.weebly.com/uploads/1/3/4/3/134326789/4768392.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/6084572e-d273-44e9-b66e-8e85422a11ff/vofirogejud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6a904c8-d990-4536-96b0-14d4924608ad/57481570129.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/bestwap_kgf_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwotarotavuz/answers_in_genesis_women_s_conference_2019.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001069c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1069C 4952 bytes
SHA-256: 75be05aaa4b82a556538e62ef0f27f2e6b569ab2aa78efbdf7b808309b079607
font_01_sfnt_off0001179d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1179D 12128 bytes
SHA-256: 876bb0ca02bb6db1aacad86a09f64aebf69d82aaf920ab413108ffe939b3fb3f
font_02_sfnt_off0001406c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1406C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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