Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9c923029144cbd2…

MALICIOUS

PDF

88.1 KB Created: 2020-08-10 21:18:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a8eb2d147c7b2c5c3493d9c0879ad11 SHA-1: 19053360f6af592c97557fb9e1511b6758b06955 SHA-256: d9c923029144cbd2aceb6f88bed7e3ed116704e5639bab6ef8dfc6a2ed1d3640
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a workout guide. This indicates a phishing or malware distribution attempt. The file also exhibits characteristics of a link farm, with numerous embedded URLs pointing to various PDF documents, many of which are hosted on Shopify. The primary malicious URL is https://ttraff.ru/pify?keyword=bony+to+beastly+workout+guide+pdf.

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=bony+to+beastly+workout+guide+pdf
    • http://files.sciguy2012.com/uploads/1/3/1/6/131637656/wanil-renirawagav-dowirumigom-worilekofoboda.pdf
    • http://files.lovesocialcafe.com/uploads/1/3/0/7/130738971/zosise.pdf
    • http://files.cathypacematthews.com/uploads/1/3/0/7/130775912/0d647.pdf
    • http://files.elasad.com/uploads/1/3/0/9/130969470/kuwed_niwub_koselotel_kufemevuneziso.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/4727012393.pdf
    • https://cdn.shopify.com/s/files/1/0434/7248/6564/files/10th_class_biology_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9030/files/25876256483.pdf
    • https://cdn.shopify.com/s/files/1/0436/5529/9237/files/balance_of_payment_of_pakistan.pdf
    • https://cdn.shopify.com/s/files/1/0434/1609/2828/files/25160458675.pdf
    • https://cdn.shopify.com/s/files/1/0432/4907/4336/files/70172633071.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdf
    • https://cdn.shopify.com/s/files/1/0431/0401/0389/files/8688948768.pdf
    • https://cdn.shopify.com/s/files/1/0435/7593/5135/files/muduwefoxok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010f0e.bin
df7ab4a4ece0a3c724d15fbb0f6b2fee6b1f1858486bdf219b5caba855759010		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F0E 5536 bytes
font_01_sfnt_off00012205.bin
ba171370ed91d692329086f376b01004a33d96a00be570d833a3e58d925c9119		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12205 10296 bytes
font_02_sfnt_off0001453f.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1453F 4324 bytes

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