Malicious PDF — malware analysis report

Static analysis result for SHA-256 a95e033f187febee…

MALICIOUS

PDF

42.8 KB Created: 2020-08-25 05:25:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58538d1a7675e179cd4aef4eaae0c446 SHA-1: 82c8a3dbff1eb9e33719f9b62a8f25ab5eaebfdd SHA-256: a95e033f187febee496dbd0ea383e130788dfab312358b192f1546a5be12d5fb
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary malicious link identified is 'https://ttraff.ru/pify?keyword=mazda+axela+english+manual', which is flagged as malicious. The document body, though heavily obfuscated, also contains this URL, suggesting it's the intended lure. The presence of numerous other links, including to Shopify domains, indicates a link farm strategy to obscure the malicious destination.

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=mazda+axela+english+manual
    • http://repetedu.homeschoolbrew.com/uploads/1/3/0/8/130874030/3910324.pdf
    • http://files.essenceofbeautydublin.com/uploads/1/3/1/6/131637057/9362341.pdf
    • http://files.brothersinthewild.com/uploads/1/3/0/9/130969446/jazokibato.pdf
    • http://files.watergirlcreations.com/uploads/1/3/2/7/132712676/rutofunudepix-kowuziwaguf.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1908/files/discord_red_text.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9432/files/creative_beamforming_microphone_review.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/71519182442.pdf
    • https://cdn.shopify.com/s/files/1/0431/4028/4583/files/niccol_ammaniti_io_e_te_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8850/2174/files/36031917990.pdf
    • https://cdn.shopify.com/s/files/1/0441/0051/8040/files/51527045780.pdf
    • https://cdn.shopify.com/s/files/1/0437/1503/5291/files/90605377980.pdf
    • https://cdn.shopify.com/s/files/1/0438/3748/9309/files/lean_on_me_sheet_music_easy.pdf
    • https://cdn.shopify.com/s/files/1/0429/5173/7498/files/l_carnitina_bula.pdf
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/4856820657.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/bbwc_fan_forum.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_off00006a04.bin
71a30810087ba7a1f50e78c141b03c128acf4e5be6f3e40bdad0c984827f3322		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A04 5264 bytes
font_01_sfnt_off00007bd4.bin
5a3a453f29c9ea97a49adf1f8769c5ce75b8d22b6397349810dbac1a59619a39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BD4 10208 bytes

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