Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca61dcae7076fe4…

MALICIOUS

PDF

73.0 KB Created: 2020-08-04 17:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2feebeeead0af6a92bfddf664ea34399 SHA-1: f9b8e904a29319685373c8eefc840e2c826f23cc SHA-256: fca61dcae7076fe48f316d87c377a0ee9e00f0793bd5ee451ff46f1401343fd6
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for an advance-fee scam lure, indicating it's designed to trick users into paying money. It also contains a malicious redirector link pointing to 'ttraff.ru', which is likely used to deliver the next stage of the attack. The document body, though heavily obfuscated, contains text fragments related to 'current affairs weekly pdf february 2020' and the malicious URL, reinforcing the lure. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm used for SEO poisoning to attract victims.

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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/pify?keyword=affairscloud+current+affairs+weekly+pdf+february+2020
    • http://files.mountweazelorwellgoode.com/uploads/1/3/1/3/131380723/51c6c6441c746.pdf
    • http://files.glcfaithformation.org/uploads/1/3/1/3/131380848/jafitimujegi-pilebe-desivitowedapud.pdf
    • http://files.koasportscoaching.com/uploads/1/3/1/4/131407423/xuwetisa.pdf
    • http://files.creatingthespaces.ca/uploads/1/3/1/6/131606295/mabivosapobiki.pdf
    • https://cdn.shopify.com/s/files/1/0431/6112/5015/files/38593850517.pdf
    • https://cdn.shopify.com/s/files/1/0434/4512/5281/files/negezefidikovepelad.pdf
    • https://cdn.shopify.com/s/files/1/0435/0102/7493/files/79993763207.pdf
    • https://cdn.shopify.com/s/files/1/0445/4167/3636/files/gta_4_simple_trainer.pdf
    • https://cdn.shopify.com/s/files/1/0438/4076/6109/files/6082228327.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/lopepewitekavod.pdf
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/86692976578.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9894/files/kowuxu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/19987988093.pdf
    • https://cdn.shopify.com/s/files/1/0437/7303/4658/files/45809814626.pdf
    • https://cdn.shopify.com/s/files/1/0432/5595/5619/files/fefixaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/14251285428.pdf
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/pozukudegitorip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2858/6402/files/69504693067.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_off0000c90c.bin
937f7222a334f774f0a66cb42754467bb5c022e845374c68ee0617d9d0f4bc0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC90C 5812 bytes
font_01_sfnt_off0000dcfd.bin
64cad62be4125913c4948d459a0c3a0804f19f6575f913cd9f0ab9de70292364		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDCFD 10380 bytes
font_02_sfnt_off000100bb.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100BB 16164 bytes

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