Malicious PDF — malware analysis report

Static analysis result for SHA-256 67814031ca9a8f0b…

MALICIOUS

PDF

51.0 KB Created: 2020-11-09 12:41:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: cbaab03a00dfc35f9237bf1502900378 SHA-1: 1d044a652008de1f4c5377e19caaaa3cdf1a90df SHA-256: 67814031ca9a8f0bcbf5b25153377c91a7103d74c8099b61df8e040c4c18e1b0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to external resources. One of these links, https://traffine.ru/aws?keyword=4th+down+and+goal+2016, is identified as a malicious redirector. The document's structure and the presence of numerous links suggest an attempt to direct users to malicious infrastructure, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://traffine.ru/aws?keyword=4th+down+and+goal+2016 In PDF document text
    • https://wisizexabebaj.weebly.com/uploads/1/3/4/4/134461468/wopokekiwadegujikik.pdfIn PDF document text
    • https://lubipufubuk.weebly.com/uploads/1/3/4/5/134597980/zuwoxuxijefisi.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/soxanudamun.pdfIn PDF document text
    • https://pafuwaron.weebly.com/uploads/1/3/4/3/134385690/83f4b132c7bc9f.pdfIn PDF document text
    • https://saxuvoxu.weebly.com/uploads/1/3/4/3/134319352/1020812.pdfIn PDF document text
    • https://finazodaxuvoj.weebly.com/uploads/1/3/2/6/132682535/gofavunagurib-vapuwewuro.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_5f96a0bd13ea8.pdfIn PDF document text
    • https://beritugemob.weebly.com/uploads/1/3/4/3/134332724/kowimiteze.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/pokobu-pidoror-pekirez.pdfIn PDF document text
    • https://xodalolekuxol.weebly.com/uploads/1/3/4/1/134108590/e3ac7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/98680631076.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/8486539804.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/duboxivosud.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61ee3186-31e4-461e-86e6-9c0e96345704/blue_dragon_wyrmling_d_d_5e.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/3164741854.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_off00008841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8841 5380 bytes
SHA-256: 833df772563907208e4d22685b288ef8073a433f650eccbafcd50e8a9def7440
font_01_sfnt_off00009aa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AA5 10840 bytes
SHA-256: d5367ae022b3923d7a1178c4b0fb69c8082c9f77606912c629b4bce1c1e9f566

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