Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dbd21be7e98562f…

MALICIOUS

PDF

42.6 KB Created: 2020-08-23 13:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cc6d2770679752bbe790f647a76ea11 SHA-1: 878c3df567c8446e171b1a57ff184f217c21bc7b SHA-256: 3dbd21be7e98562f115253c5db662571084818d19529ff2f6d96b674a2cc1310
160 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector infrastructure. The document body and heuristics suggest a lure for credential harvesting, specifically mentioning MFA or one-time code collection. The primary malicious IOC is the redirector URL: https://ttraff.ru/pify?keyword=android+whatsapp+backup+restore+from+icloud.

Heuristics 4

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=android+whatsapp+backup+restore+from+icloud
    • http://files.carolinedancewest.com/uploads/1/3/0/8/130814232/sidirukuwakezezafe.pdf
    • http://files.mezfantasypublishing.com/uploads/1/3/2/6/132695258/peranunulekelog.pdf
    • http://files.ziara.org/uploads/1/3/1/6/131607866/1138645.pdf
    • http://jivid.jdbolter.net/uploads/1/3/1/4/131406437/rebudiselefo_tufokigugik_vanuris.pdf
    • https://cdn.shopify.com/s/files/1/0428/6945/7055/files/81719532138.pdf
    • https://cdn.shopify.com/s/files/1/0435/3720/3364/files/aarp_games_solitaire.pdf
    • https://cdn.shopify.com/s/files/1/0435/4762/3592/files/87799138680.pdf
    • https://cdn.shopify.com/s/files/1/0436/9586/6010/files/42615409590.pdf
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/brche_division_aufgaben.pdf
    • https://cdn.shopify.com/s/files/1/0435/4624/7332/files/10290235595.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/33078685051.pdf
    • https://cdn.shopify.com/s/files/1/0429/5763/5735/files/vidasinufezowujiwibewi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/35782697768.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4975/files/jojizu.pdf
    • https://cdn.shopify.com/s/files/1/0431/6702/3259/files/nawenuvewedepajimiwif.pdf
    • https://cdn.shopify.com/s/files/1/0437/1939/3448/files/funufafenemigidosidi.pdf
    • https://cdn.shopify.com/s/files/1/0429/9892/3427/files/7946411959.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/lulisukobutususifixu.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_off000067a1.bin
0d1c1baf4eb874dfb4be9437513946343935cbdd5d86e71f15c7c24ef0609167
pdf-font-stream PDF embedded font (sfnt) at offset 0x67A1 5680 bytes
font_01_sfnt_off00007ad1.bin
e759c2cda9dfed965901209c072130e8d9a637d16487c38b9ad74787da287fdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD1 10108 bytes