Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f92a7f27ae872f8…

MALICIOUS

PDF

39.5 KB Created: 2020-08-10 06:28:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8b7d3dddd2f36df4f50bc458264cd1ce SHA-1: c9d53e8e6e2948ade62838eb8d96b1c67aeb7c2b SHA-256: 2f92a7f27ae872f8c4b5383dd3260442c850dc0d60c9e7a684492cd9a15ac014
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=science+dictionary+free+download+pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. Additionally, the PDF contains a large number of external links, many hosted on shopify.com, suggesting a link farm or SEO manipulation tactic to distribute the malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=science+dictionary+free+download+pdf
    • http://files.angelfacebeat.com/uploads/1/3/1/6/131606281/gerupofosepak.pdf
    • http://files.warleyseniors.co.uk/uploads/1/3/1/0/131070062/de368.pdf
    • http://files.jenaforryaneyoga.com/uploads/1/3/1/6/131606111/5210671.pdf
    • http://files.noiinsw.com/uploads/1/3/2/7/132740606/1965487.pdf
    • http://files.brandonbarrowscomics.com/uploads/1/3/1/3/131383398/laxowitupizovexuw.pdf
    • https://cdn.shopify.com/s/files/1/0430/3699/9831/files/35542802130.pdf
    • https://cdn.shopify.com/s/files/1/0432/8072/8224/files/gedebivawidalarujuku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/jozuwunozanegotuveb.pdf
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/31738645897.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3709/files/91107480599.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/31219413398.pdf
    • https://cdn.shopify.com/s/files/1/0428/1679/8883/files/barron_s_sat_subject_test_math_level_2_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8519/3625/files/72380922925.pdf
    • https://cdn.shopify.com/s/files/1/0429/4157/9420/files/vawanifuvetutapu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2293/4435/files/87530475823.pdf
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/corpo_vivo_adonias_filho.pdf
    • https://cdn.shopify.com/s/files/1/0434/3991/5175/files/gitignore_for_node.pdf
    • https://cdn.shopify.com/s/files/1/0430/5692/2777/files/43901866098.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lovukapovilelogitolosir.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_off000059ff.bin
8b7180019434d8090bfca6afa06614038ad0de03b449eedfda17afc843d343d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59FF 5268 bytes
font_01_sfnt_off00006c19.bin
43c7754a8537959580aca908fdb6c2253cb86b39641a8bdb78317cc20235ac6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 10248 bytes

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