Malicious PDF — malware analysis report

Static analysis result for SHA-256 016a6e1d49496efb…

MALICIOUS

PDF

40.4 KB Created: 2020-08-16 23:50:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f15f63d0f7ddeee8b0c28c640db4ac6e SHA-1: cb35b9fd93d06290082b8bbcd087b531d53abbf2 SHA-256: 016a6e1d49496efbe144509e03a157cc8c4f66cb19aed38a35a08d852325faf2
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a deceptive title 'Video bacaan ayat ruqyah' and embeds a link to `ttraff.com`, a known malicious redirector. This URL is likely intended to lead the user to a malicious payload or phishing page. The PDF also contains a large number of links to other PDFs, many hosted on Shopify, suggesting a link farm or SEO poisoning tactic to distribute malicious 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 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/pify?keyword=video+bacaan+ayat+ruqyah
    • http://tujuxe.cool-cat.store/uploads/1/3/2/6/132681513/melexopugixivutanu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7297/0133/files/badaguzanomomofotowuvuw.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/72367989549.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9158/files/66488733062.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/is_protosmasher_safe.pdf
    • https://cdn.shopify.com/s/files/1/0431/9664/5538/files/56834107234.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3281/files/vaguruje.pdf
    • https://cdn.shopify.com/s/files/1/0433/2670/1726/files/auditing_and_assurance_services_6e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/82029017565.pdf
    • https://cdn.shopify.com/s/files/1/0433/0225/6795/files/bailando_remix_enrique_iglesias.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_off00005fc3.bin
4ff70a40ab066fe45470de975275dfdfecdda30040e8aa2edb0307e09d5b5fe8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC3 5152 bytes
font_01_sfnt_off00007141.bin
dfee232080f51d0f2123b883fbcb32b6750103e799773ce195b403ed8a65652e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7141 10164 bytes

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