Malicious PDF — malware analysis report

Static analysis result for SHA-256 569eb6334b377041…

MALICIOUS

PDF

55.3 KB Created: 2020-10-15 21:09:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: dda6fd09f5c39d904e7360bfe7715a78 SHA-1: eaf94a5cdb8885b6005cb49cf85b85a5451fa4d5 SHA-256: 569eb6334b377041b219458d8cd5164a8cbbfa239aa64f6571fe578a8952b250
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, includes the same URL, suggesting an attempt to lure the user to malicious content. The presence of multiple links on disposable hosting further supports a malicious intent, likely to distribute malware or phishing content.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://gettraff.ru/123?keyword=vicky+donor+songs+download+wapking In PDF document text
    • https://site-1048162.mozfiles.com/files/1048162/64059153792.pdfIn PDF document text
    • https://site-1039481.mozfiles.com/files/1039481/kusexoxivokixujoxe.pdfIn PDF document text
    • https://site-1038682.mozfiles.com/files/1038682/75381386563.pdfIn PDF document text
    • https://site-1037207.mozfiles.com/files/1037207/xuwekenotimux.pdfIn PDF document text
    • https://pukotegifo.weebly.com/uploads/1/3/0/8/130874060/908950.pdfIn PDF document text
    • https://panidulupeju.weebly.com/uploads/1/3/0/9/130969186/xevenezegoja.pdfIn PDF document text
    • https://site-1040223.mozfiles.com/files/1040223/sorudorerumog.pdfIn PDF document text
    • https://site-1042013.mozfiles.com/files/1042013/42723226477.pdfIn PDF document text
    • https://site-1040224.mozfiles.com/files/1040224/59532340896.pdfIn PDF document text
    • https://site-1038468.mozfiles.com/files/1038468/19317513913.pdfIn PDF document text
    • https://site-1043705.mozfiles.com/files/1043705/mowumasogefurebufava.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/1/0484/6095/5798/files/pironubumazameza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8276/0601/files/49735717602.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3303/3366/files/pathfinder_half_dragon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9af6750c-3e40-410d-9113-57b2d21070d4/12839774013.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d27a2b8c-1b77-4995-bcce-3a453da87cfd/42547296175.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c780ef7a-4317-4507-bc61-3b5422c30d42/zigogesotovim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9420/3331/files/40249772859.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6148/9049/files/4230181369.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_off000091b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91B8 5464 bytes
SHA-256: 15c9740ebe583515000c3bcad9bedea66b7de889a31dc42171f4e710939c46c3
font_01_sfnt_off0000a476.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA476 14108 bytes
SHA-256: a0c72b632d5896d170d8618b5f342f9f1c69867423f0734036cb51a5a77b8740

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