Malicious PDF — malware analysis report

Static analysis result for SHA-256 a75ee334b39ac862…

MALICIOUS

PDF

39.1 KB Created: 2020-08-09 17:16:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 427d248deedcff272a74e031d4ce05c5 SHA-1: 67049c0a82b507d8df5ceb2486a2d6d993227e16 SHA-256: a75ee334b39ac8623a702d421aad80ce58e7a520c5dbedbef6555f3c2e7c2ca4
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the URL 'https://ttraff.ru/pify?keyword=adobe+pdf+online+review', suggesting a lure to trick users into clicking malicious links. The presence of a link farm further indicates an attempt to distribute malicious content or phish for information.

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=adobe+pdf+online+review
    • http://files.three54.co.uk/uploads/1/3/0/7/130739204/897474.pdf
    • http://files.sneakerfactoryfp.com/uploads/1/3/1/3/131381553/242681dd5.pdf
    • http://files.barefoottraveler.com/uploads/1/3/0/8/130814926/fagup_wigika.pdf
    • http://files.risingtimes.info/uploads/1/3/2/6/132696304/42ba0badee5.pdf
    • http://vopaxixa.ladieslearnenglish.com/uploads/1/3/0/7/130738731/3389600.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5882/files/bedijodowajovijisuzezif.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6716/files/format_of_formal_letter_cbse_class_12.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/82212396193.pdf
    • https://cdn.shopify.com/s/files/1/0436/4759/8742/files/after_12th_courses_list_in_science.pdf
    • https://cdn.shopify.com/s/files/1/0437/4324/8533/files/fomatadelowijinowu.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/econometrics_journal.pdf
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/bemipigekivisipox.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/lyrics_for_christmas_carols.pdf
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/68016258924.pdf
    • https://cdn.shopify.com/s/files/1/0434/8693/7253/files/candidase_de_repetio.pdf
    • https://cdn.shopify.com/s/files/1/0438/7926/8520/files/panasonic_aw_rp50n.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_off00005c1e.bin
c8d7f7f9eaa2473fc254bd98b743c79900cb1e96ef72f36804889d96f32fad37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1E 4928 bytes
font_01_sfnt_off00006d03.bin
60babd757a94bc43b0eef681f9fcf43999510b712521951d1878b78fb7d2b444		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 10156 bytes

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