Malicious PDF — malware analysis report

Static analysis result for SHA-256 c20074c660de0e76…

MALICIOUS

PDF

57.4 KB Created: 2020-08-18 15:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d76f4ab43f8d876e2f00f22f2f449b SHA-1: 9ece5426b4ee9ba62b5f99d65e0269881ec395b8 SHA-256: c20074c660de0e76250d40865c8ce05cc1671bc295016752c21ea10e99172b1a
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=auguries+of+innocence+analysis+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many of which are to benign Shopify domains but also include several unknown domains. The document body, though heavily obfuscated, contains the same malicious URL and benign URLs, reinforcing the redirection attempt. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=auguries+of+innocence+analysis+pdf
    • http://files.olgahirschart.com/uploads/1/3/1/1/131164153/2133917.pdf
    • http://files.ruggedmountaintaxidermy.com/uploads/1/3/2/6/132696154/kinumarezoda.pdf
    • http://zusujafo.groennfell.com/uploads/1/3/2/3/132303245/wazowatolupu.pdf
    • http://sebuxage.newbeautynls.com/uploads/1/3/1/0/131069992/68c240.pdf
    • http://files.kingdomestablishmentministries.net/uploads/1/3/0/9/130968962/5726898.pdf
    • https://cdn.shopify.com/s/files/1/0432/3010/1668/files/brandy_best_friend_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/0611/6511/files/ap_grama_sachivalayam_model_papers_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7643/5612/files/bulbul_nest_information.pdf
    • https://cdn.shopify.com/s/files/1/0438/5567/5542/files/87529032897.pdf
    • https://cdn.shopify.com/s/files/1/0432/5539/8563/files/cursive_letter_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/free_assured_tenancy_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/3337/9487/files/the_practical_kabbalah_guidebook.pdf
    • https://cdn.shopify.com/s/files/1/0433/9400/7191/files/63166182698.pdf
    • https://cdn.shopify.com/s/files/1/0436/1050/5379/files/picsart_hack_apk_revdl.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/rofivezavewuredugaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/6126/4035/files/jukuvimo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/jisutegebofomuwup.pdf
    • https://cdn.shopify.com/s/files/1/0451/0928/0933/files/oxford_bookworms_library_stage_3_frankenstein.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_off0000a3b8.bin
6bc7edd0387fbb143fef7d35f6c8a9f06459e6784c1925b3d4a96c4f12f88fe9
pdf-font-stream PDF embedded font (sfnt) at offset 0xA3B8 5416 bytes
font_01_sfnt_off0000b63f.bin
9e2ae6b4a094ff5c2ebc7c43fe631b97f36f83558ce0bb779d315485e68581e6
pdf-font-stream PDF embedded font (sfnt) at offset 0xB63F 10076 bytes