Malicious PDF — malware analysis report

Static analysis result for SHA-256 b43a5192f3edbac8…

MALICIOUS

PDF

64.0 KB Created: 2020-08-22 20:55:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e431b1b95236237751dc0f8120b89a5 SHA-1: 432be95b00c61395769581c54001b56e086fa561 SHA-256: b43a5192f3edbac89ba7eb77ccbc17df063b87962945c17c2c4793e3d1ca7720
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, with numerous embedded URLs. One URL, 'https://ttraff.ru/pify?keyword=manualidades+navide%25C3%25B1as+paso+a+paso+en+foami', is flagged as a malicious redirector. Another embedded URL, 'http://vavanevap.allisonadelia.com/uploads/1/3/2/3/132303238/d65ad.pdf', is also present. The presence of a malicious redirector suggests an attempt to lure users to malicious content, potentially for phishing or malware distribution.

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.ru/pify?keyword=manualidades+navide%25C3%25B1as+paso+a+paso+en+foami
    • http://vavanevap.allisonadelia.com/uploads/1/3/2/3/132303238/d65ad.pdf
    • https://cdn.shopify.com/s/files/1/0447/2812/3545/files/aaranya_kaandam_movie_tamilrockers.pdf
    • https://cdn.shopify.com/s/files/1/0434/2556/2791/files/jijototodimerew.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/pengertian_guru_pendidikan_agama_islam.pdf
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/automata_theory_cohen.pdf
    • https://cdn.shopify.com/s/files/1/0431/8812/5857/files/nuxuriwuxazirulizipiku.pdf
    • https://cdn.shopify.com/s/files/1/0429/1110/5183/files/nudebawivofosuwegate.pdf
    • https://cdn.shopify.com/s/files/1/0435/6882/4488/files/gawexuxuxigal.pdf
    • https://cdn.shopify.com/s/files/1/0435/9038/5821/files/33450072993.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_off00008bf5.bin
ad2ea6c3f25d7de7cbd29546f85ecd3dcabcfc8141fdb5e165558ad2a5163fe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BF5 5168 bytes
font_01_sfnt_off00009d2e.bin
63e783c03da57879afb775159473c506eb962ef38e1d93fd37c9511de6b0a0ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D2E 2132 bytes
font_02_sfnt_off0000a6eb.bin
9e2dcb6bd2eb70d941d83ea89ffc1f0894aa8e1dd7e092429aeb493b4457071a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EB 11932 bytes
font_03_sfnt_off0000cd27.bin
b505b0b78a03edf4fb956c728891bec86144e12ded48a11ec23002336feffae8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCD27 16080 bytes
font_04_sfnt_off0000e1e0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E0 4324 bytes

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