Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd60b62c78925c9…

MALICIOUS

PDF

77.9 KB Created: 2020-11-23 09:19:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3b884752a4ef89d90b721fa69010975f SHA-1: 286c6109601582abdd6a5041861f1fed3f25126b SHA-256: 0bd60b62c78925c9f0c8e55fd108cd7213f4ea5884068effd720a1010c0c228b
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document flagged by multiple heuristics as malicious, including a critical finding for linking to known malicious redirector infrastructure. The 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly suggests the document's content is designed to trick users into believing they are involved in a lottery, prize, or parcel delivery scam, which is a common advance-fee fraud tactic. The embedded URL `https://cctraff.ru/aws?utm_term=avast+virus+cleaner+for+android+phones` is a primary indicator of malicious intent, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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://cctraff.ru/aws?utm_term=avast+virus+cleaner+for+android+phones In PDF document text
    • https://cdn-cms.f-static.net/uploads/4448547/normal_5fa2fd8508e37.pdfIn PDF document text
    • https://siregudak.weebly.com/uploads/1/3/0/7/130738759/4f1cf23.pdfIn PDF document text
    • https://kevapesezivobi.weebly.com/uploads/1/3/4/8/134893959/7358889.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459466/normal_5fa3c0ffdaa83.pdfIn PDF document text
    • https://dawiganolakegoz.weebly.com/uploads/1/3/4/3/134367714/7233248.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/6b299006-ec6f-4cb1-ad6b-fe84e1749576/zosexapoxofumad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdab0c37-7149-40db-a3c4-10ef0b0773a4/38326477210.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79b7b528-81d2-4ba5-9347-a2434d7e228b/25_kw_generac_generator_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aae0a06c-acc2-4072-b3d2-6b305adf5343/pavifexejinowudusilexi.pdfIn PDF document text
    • https://s3.amazonaws.com/fowikorejodi/jufigit.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/sign_hotmail_email.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7426dbe-622a-47cd-8584-b5637c49e506/percy_jackson_lightning_thief_study_guide.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_off0000e49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49A 5172 bytes
SHA-256: df740144fb59d76078d6f690b507b1c842df72f67c4a68a94a9789a8b9d4c722
font_01_sfnt_off0000f627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF627 11212 bytes
SHA-256: 2180dfcfac71d0feb686beeb07a890432b0a27e32e531fca0f0ae222a84271dc
font_02_sfnt_off00011c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C56 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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