Malicious PDF — malware analysis report

Static analysis result for SHA-256 d50bdcee9a17e0ce…

MALICIOUS

PDF

72.5 KB Created: 2021-01-02 14:20:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3286410e3db599506d3845396ad12b10 SHA-1: 92bb5b53adfc0d4797044c4a00b28026b69710be SHA-256: d50bdcee9a17e0ce114d8ccd5ae8607254c64ba156276ee2726e1302eea5de06
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffmen.ru'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt, aligning with the Spearphishing Attachment technique.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • 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.
  • 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/aws?utm_term=english+to+spanish+pronunciation+guide In PDF document text
    • https://cdn.sqhk.co/nudizodi/fjdgdje/pocket_doctor_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/gi3EIN0/amazon_prime_video_android_tv_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465914/normal_5fdfabf850880.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/0c666d2e-79cf-4891-87c5-ea72d35f1416/peel_master_satisfying_peeling_soap_cutting_asmr.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75ded965-319f-48b3-9323-b06855a1dda9/katigesamorifosemajaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/630b4896-ad48-44a2-b29c-2d30bf16b537/48955582840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c22fa2c6-254f-4b4f-930f-ad1982df64d6/lugaxagaxowa.pdfIn PDF document text
    • https://s3.amazonaws.com/vikukinumet/16920423438.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81a7dca6-bed1-493e-ac13-1ff15251e76b/26508276239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5ba37fe3-f0a6-4c05-bbb0-f1b4d4dab5ba/ot_2020_rtve.pdfIn PDF document text
    • https://s3.amazonaws.com/kezemiradigu/44657661271.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 1

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF63 5292 bytes
SHA-256: fe90cd5b0367462295eb27185e3a77776bd64b8d5b9d3ac938b0ced16eb0c577
font_01_sfnt_off0000f15c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15C 10672 bytes
SHA-256: e888c1e00e742bb8b4f4337431804f6eca89e7717ad44a494b949da3d072bee5

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