Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e86dd3be1c883a3…

MALICIOUS

PDF

56.0 KB Created: 2020-10-30 20:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 8ad867bd139c95bdfd82e0b1b2a1fb9e SHA-1: 0a837f9a90ffee1b34dd7bd482d29f5cf99f5d4f SHA-256: 4e86dd3be1c883a36fc990e725ca37ef6ba9d2f206e14b4fc76003c6fdab52f2
94 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a link to known malicious redirector infrastructure. The embedded URL `https://ggtraff.ru/strik?keyword=police+story+3+ending` is the primary indicator of malicious activity. While no scripts were extracted, the presence of a malicious redirector suggests an attempt to lure the user to a harmful site, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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://ggtraff.ru/strik?keyword=police+story+3+ending In PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/bevusirobute.pdfIn PDF document text
    • https://zemuxarasojutin.weebly.com/uploads/1/3/4/3/134374283/9671421.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/dd842c0c-d06d-4ca7-ab74-28d8c00e53fb/sofitalelukoxegez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4201e4cc-2182-419a-be19-e5801142abb0/netgear_r6200_review.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/sajomijejubimokisopek.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/ramasalad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/136e0b75-3c5a-4eee-bb2f-afe7dbbdba37/rinakagosumofexanosep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/412b5430-32b1-4578-89f9-fcf49a53abca/mighty_ducks_vine_family.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b362ec48-2c2b-45e9-9b4c-0bfdafb8fb2e/74024087673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/8034/9344/files/timberland_baby_size_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/6384/1446/files/zofosapetedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/2052/8027/files/present_perfect_worksheet_british_council.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2899/1130/files/55235308521.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_off00007174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7174 12744 bytes
SHA-256: 5954187822654083cbe8ea1d64cf27008e212ca05a7d0a3b0f3989081e0d5ef5
font_01_sfnt_off00009a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A36 5164 bytes
SHA-256: 4964f58a6482304e30c591d221677d973b12d3e9469db8b3d490fb506b8cc337
font_02_sfnt_off0000abe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABE2 11888 bytes
SHA-256: a0027747725f030db82d78600ce0bcf1aa4108ed6b572ad626335be003fbf832

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