Malicious PDF — malware analysis report

Static analysis result for SHA-256 49880b7cee465eb6…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 01:08:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 349b0169ec262e9dd22da0ab64a6cce0 SHA-1: 81ce2cdd3430a575e5a96865df88eeb29d7d103b SHA-256: 49880b7cee465eb61e34521aa6a75e874a04fa2267fe17f9210a63415eba00b4
152 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is disguised as a Sony company introduction. This indicates a social engineering attempt to lure users to malicious infrastructure. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of malicious links and the document's deceptive content are sufficient indicators.

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=sony+company+introduction+pdf
    • http://mogepa.marrajewellery.com/uploads/1/3/0/8/130814179/1eb40e8146a41.pdf
    • http://files.pneumaconference.com/uploads/1/3/0/7/130776147/boboxoxitemeni-malobiguzakujov-sotisefobize.pdf
    • http://files.oznewstoday.com.au/uploads/1/3/1/3/131379217/siwelibug.pdf
    • https://cdn.shopify.com/s/files/1/0428/8439/9270/files/98981787112.pdf
    • https://cdn.shopify.com/s/files/1/0437/0549/9803/files/virtualbox_shared_folder.pdf
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/battle_for_middle_earth_2_pc_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/69036506722.pdf
    • https://cdn.shopify.com/s/files/1/0438/4486/2114/files/16964314623.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/69787228192.pdf
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/utility_chapter_in_economics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/74097646875.pdf
    • https://cdn.shopify.com/s/files/1/0433/3341/9166/files/49373414047.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9768/files/79955746527.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/fusibidujadovade.pdf
    • https://cdn.shopify.com/s/files/1/0447/3811/7781/files/aspects_of_child_development.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005ceb.bin
ed1ef9240967ae2ea710982e22078b551c8b0a3d9119e7330ceb2c864ff1a0e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CEB 5060 bytes
font_01_sfnt_off00006df8.bin
bc9c22c11079677e0ee1398f3889f9adcb8ae09dc57474f99a479d5b92fa092b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF8 10028 bytes
font_02_sfnt_off0000903e.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x903E 4324 bytes

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