Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cae86d255ddfa5…

MALICIOUS

PDF

41.7 KB Created: 2020-08-11 21:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54b3333a611332be808d637c6ed40646 SHA-1: f8cc16731afac149a9fec45e82a9debf95aac3be SHA-256: 17cae86d255ddfa58bfa09940bc73a816d4cffca17233aff552045a7b35d8b93
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service designed to obscure the final destination. The primary malicious link directs to 'ttraff.com', which is flagged as a malicious redirector. The document body itself contains text related to 'Muntakhab ahadith in english pdf', likely a lure to attract victims. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lead users to malicious content, potentially for further exploitation.

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://ttraff.com/wb?keyword=muntakhab%20ahadith%20in%20english%20pdf
    • http://vizenixiz.ashcancomicspub.com/uploads/1/3/0/7/130775918/sepoxipotim_livadoxi.pdf
    • http://wevafer.artistsusiewest.com/uploads/1/3/0/7/130738902/vijujega_nunamuj_bovapipabager.pdf
    • http://files.geoffpelham.com/uploads/1/3/1/4/131453998/8622246.pdf
    • http://files.southislandecebc.com/uploads/1/3/2/6/132695554/libug.pdf
    • http://davosixol.mspremus.com/uploads/1/3/1/6/131607505/jogidoxorabukowigen.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/6412/3814/files/temiwub.pdf
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/nivevavipejug.pdf
    • https://cdn.shopify.com/s/files/1/0431/8937/1040/files/notions_sur_les_automates_programmables_industriels.pdf
    • https://cdn.shopify.com/s/files/1/0438/0858/7933/files/zirurujokejedojizarunuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6408/files/nopesedelazexetebijuzura.pdf
    • https://cdn.shopify.com/s/files/1/0430/3706/5370/files/regisafowivesotewad.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/lozomosazejamerotakado.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0431/0279/7986/files/stardew_valley_golden_clock.pdf
    • https://cdn.shopify.com/s/files/1/0439/2206/3515/files/tinodelapuzuvanegata.pdf
    • https://cdn.shopify.com/s/files/1/0433/4678/8501/files/66994360890.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/56219656749.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000056b2.bin
11685852d013defb55682db064bb731a069c7e1ac5b87af8fd6701248a3a658e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B2 5416 bytes
font_01_sfnt_off00006917.bin
809e6bd900cdbe37e72b24ee30633955db1991502c3f3d5e3f95bac5d95b95f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6917 15112 bytes

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