Malicious PDF — malware analysis report

Static analysis result for SHA-256 56dbefdc89bc459c…

MALICIOUS

PDF

42.8 KB Created: 2020-08-04 09:39:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05bcdf7c0ab185c926ce072b3fc579d3 SHA-1: f321996c178cc77dc31704ca06df6c467c969375 SHA-256: 56dbefdc89bc459c3f82e528631134c6bebc8beeac2730c31aea71ebf14f72e2
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains, which is characteristic of a link farm. One of the primary links, 'https://ttraff.com/pify?keyword=sar+of+antimalarial+drugs+pdf', is identified as a malicious redirector. This suggests the document's purpose is to lure users through a deceptive link to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=sar+of+antimalarial+drugs+pdf
    • http://files.flexgridtech.com/uploads/1/3/1/0/131070009/rupoxamofafuruka.pdf
    • http://files.asldeanpapalia.com/uploads/1/3/2/6/132681670/gixazeguz.pdf
    • http://files.regenerationpositive.co.uk/uploads/1/3/2/6/132682819/8563091.pdf
    • http://files.carondeletchurch.org/uploads/1/3/0/7/130739674/tapivixafetelud_dedosu_lufug_lizobupo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/47756327055.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4632/files/gulazawunagikururoborom.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/34328551126.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/telugu_short_films_mp3_songs_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/zolosiliderilezikufa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0820/files/21140857382.pdf
    • https://cdn.shopify.com/s/files/1/0439/7491/8302/files/8687317583.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9841/files/botedesakamoxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/80647111322.pdf
    • https://cdn.shopify.com/s/files/1/0437/3292/6616/files/adverbs_list_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/kugixagodagamimaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3757/files/xoguvewifepubamekabeb.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006744.bin
2b3f472cc40bf1d0da69394f532322ba30bf215169ca553821d5f5489cf4ba7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6744 5464 bytes
font_01_sfnt_off000079c6.bin
b6c8494d0146e23a5a44f7b1dbbf8061655fe555802a5a849bd6a7cee2a65f7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x79C6 10704 bytes

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