Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f4df81c6abb1eb7…

MALICIOUS

PDF

53.9 KB Created: 2020-08-28 07:21:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 54a76746ac53bc9a0f5ec617c149e2e7 SHA-1: 4fa57bf4b0dc17a3866a3c9591a936597e12cd80 SHA-256: 1f4df81c6abb1eb7bc84e879b07a0e609cd0f1e9f4d661944ed1435f55fa4fd0
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL, 'https://ttraff.ru/pify?keyword=ultimate+galactus+trilogy', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting it is the intended lure. The presence of numerous other links, many hosted on cdn.shopify.com, points towards a link farm or phishing campaign.

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=ultimate+galactus+trilogy
    • http://files.svhsculinary.com/uploads/1/3/2/8/132814123/jabulig_gamope_dulir.pdf
    • http://files.logosassociatesltd.com/uploads/1/3/0/7/130774990/8c100206a4475b.pdf
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/5028746108.pdf
    • https://cdn.shopify.com/s/files/1/0435/9087/7339/files/patologi_klinis.pdf
    • https://cdn.shopify.com/s/files/1/0433/0799/1208/files/58912540220.pdf
    • https://cdn.shopify.com/s/files/1/0432/7417/4624/files/english_brushup_5th_edition_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/3425/5266/files/jarabuso.pdf
    • https://cdn.shopify.com/s/files/1/0461/0723/0371/files/99597441542.pdf
    • https://cdn.shopify.com/s/files/1/0431/2553/8980/files/princeton_review_cracking_the_gmat.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32852202686.pdf
    • https://cdn.shopify.com/s/files/1/0432/9163/9974/files/aditya_hrudayam_stotram_lyrics_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0435/4126/6591/files/23870165515.pdf
    • https://cdn.shopify.com/s/files/1/0433/2909/3800/files/14310179282.pdf
    • https://cdn.shopify.com/s/files/1/0429/6946/4991/files/repizabumitow.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_off00009480.bin
9d20780fc98d54f649772b3af5166c5a1d16520aecd48f7192a84d8f48e3b962		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9480 5212 bytes
font_01_sfnt_off0000a626.bin
6191462bb9a0ecc6b70109d28002eec3086a5a4eff3d73c6c11e5a8d01fdb44f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA626 10944 bytes

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