Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e886d156cb0081c…

MALICIOUS

PDF

65.0 KB Created: 2020-12-31 06:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 9e1cbc856934f878d5f8c2246d0d4069 SHA-1: 8484c1ad50ee1ad9474ae88885b612982eeff62e SHA-256: 1e886d156cb0081c5436308cf193ddd31883842b5b74485fe78963e3cdf5136a
254 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it is a malicious redirector and a payment redirection lure, suggesting a business email compromise (BEC) attack. It embeds numerous links, including one to a known malicious redirector and a link farm, likely to host phishing content or malware. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://traffmen.ru/wb?keyword=started%20when%20we%20were%20younger%20chords In PDF document text
    • https://cdn.sqhk.co/vakiduju/hcijgiJ/real_car_racing_game_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/hche5aw/dj_song_botal_pila.pdfIn PDF document text
    • https://cdn.sqhk.co/puwonereb/hjcjaq5/1157948929.pdfIn PDF document text
    • https://cdn.sqhk.co/boxokozofe/jbjb5gd/gesuf.pdfIn PDF document text
    • https://cdn.sqhk.co/kufejeni/pThhig7/xozuladuzepudu.pdfIn PDF document text
    • https://cdn.sqhk.co/dodagirojep/jbVijlS/starcraft_boats_aluminum.pdfIn PDF document text
    • https://cdn.sqhk.co/zesunotu/3jijeDT/anti_corruption_commission_rules_2007.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawifen/sRy9hax/vutubobivemanatexixemibu.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/jciga7M/stickman_destruction_3_heroes_mod_apk.pdfIn PDF document text
    • https://kodepifaz.weebly.com/uploads/1/3/4/7/134705681/9027941.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/ab7ade97-cde0-4807-a81c-2555f94cadc3/hyperpro_steering_damper_mounting_kit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a473a4-c98c-422a-a0f7-f6e6f9490d65/vimezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2410c5a1-c8c3-470a-9c67-05b793a7ceb4/tejoxepanomubuxanudan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf58ffc-7edd-4501-9ee8-c2efd0383780/transfer_all_google_photos_to_new_account.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b612188-8068-4baf-b594-1a76930c45ed/powekiwajevawemeru.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_off0000c3bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BF 5464 bytes
SHA-256: c77d029451e48ed1c31adf8a355cd72d6799533d3549316beb541b4dc203f5c4
font_01_sfnt_off0000d665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD665 9756 bytes
SHA-256: b6ca6df7bc48c2fa0807cf159a3ab6d34ecaec590fc09c9035df04fb88c01825

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