Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a802c1f6e527bb…

MALICIOUS

PDF

47.0 KB Created: 2020-08-25 08:06:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e16f01fa12577065d92d59418ff2b48 SHA-1: 7456b892ec91a6742faa3731b08dfcb0374a4631 SHA-256: 40a802c1f6e527bb6e79226f68ba53f75fef00889602be469928e5238fd68903
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is indicative of a link farm. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL. This suggests the primary goal is to redirect the user to malicious content or further stages of an attack.

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=airplay+android+tv+sony
    • http://files.karolinabohn.com/uploads/1/3/2/7/132712000/lixovuxakof.pdf
    • http://xutozixar.fourseasonsbuilders.biz/uploads/1/3/2/6/132696194/paduteturigupol_jexajinumojig.pdf
    • http://files.patkearnsmusic.com/uploads/1/3/2/7/132710783/parig-sobababox-ripakomomal.pdf
    • http://files.martinmchughmarketing.com/uploads/1/3/1/3/131383775/5847563.pdf
    • https://cdn.shopify.com/s/files/1/0435/1787/0239/files/9894076969.pdf
    • https://cdn.shopify.com/s/files/1/0440/2289/0646/files/ahram_org_eg_index.pdf
    • https://cdn.shopify.com/s/files/1/0438/1809/0653/files/39963896107.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67264452348.pdf
    • https://cdn.shopify.com/s/files/1/0432/3213/3278/files/cardiac_rehabilitation_exercise_program.pdf
    • https://cdn.shopify.com/s/files/1/0429/9181/2771/files/sigezizamedumuli.pdf
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/kuxorepelitagusitumajop.pdf
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/29966821027.pdf
    • https://cdn.shopify.com/s/files/1/0433/3587/6776/files/atlas_d_anatomie_humaine.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c40.bin
42664a653ea4d2dbc66ced7fed087fda09eb0433b8e72c09cb8078be9843b187		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C40 1640 bytes
font_01_sfnt_off00006457.bin
eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6457 2828 bytes
font_02_sfnt_off00006e61.bin
adf2fc6a40fa07049ae975e47df472c99fa3b35398ee3dd726c25b6c7f153e09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E61 4772 bytes
font_03_sfnt_off00007e95.bin
13a978c572252d3c0f721dd2ad4fe94a6598e0a90d108dab9f4f5a3b6ba37ee5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E95 9948 bytes
font_04_sfnt_off0000a0b1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0B1 4324 bytes

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