Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bfdf5f5cb387ac5…

MALICIOUS

PDF

42.8 KB Created: 2020-11-03 10:51:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 9c027595184b4693b612a44b05e28035 SHA-1: 6c0a78db97210aa8f63da6c50bbd12d497a4156b SHA-256: 6bfdf5f5cb387ac55118ea4f7dea2820665df8462251aebe4f569108aefd5318
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified as 'ggtraff.ru'. This technique is often used for phishing or to serve further malicious content. The ML classifier strongly indicated maliciousness, and the presence of numerous external links supports a malicious intent.

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://ggtraff.ru/aws?keyword=six+rivers+charter+high+school+arcata In PDF document text
    • https://tejelodaburibav.weebly.com/uploads/1/3/4/3/134317360/rolod.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/xutituso.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369336/normal_5f88806f40737.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/gelitu.pdfIn PDF document text
    • https://kopadababipa.weebly.com/uploads/1/3/4/5/134502609/rotozalazokomok.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408862/normal_5f92ad5f1b3d6.pdfIn PDF document text
    • https://duxataravur.weebly.com/uploads/1/3/4/0/134017775/tutuxenita_marowopa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1185/6324/files/92565772638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/7149/0198/files/60093948126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9187/6768/files/jajonazaligiwawaxugudisa.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/kekidisevur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/4348/3559/files/jonasovakulevi.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/beat_the_boss_4_apk_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0467/7756/5337/files/94280571137.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/82608017175.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/47235193519.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_off00006622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6622 5292 bytes
SHA-256: 089e15272c421de1e764e5c989822480e0346745406607bbb97915ff330e2715
font_01_sfnt_off00007829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7829 11088 bytes
SHA-256: dbe9439ee9e0171b24cd66e16cc1485cff68f5fde3559adf44b5e0ef5e9645f9

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