Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bbaa697dbcdde9…

MALICIOUS

PDF

49.9 KB Created: 2020-08-11 15:27:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ee49e4829288252f36fe5284ff41ba0 SHA-1: 950a038532d749813aae666e9eb81da039ba8a95 SHA-256: 89bbaa697dbcdde956e7a6987e6f2174a9fccbd9928ae9ad59af6c55e23480b6
140 Risk Score

Malware Insights

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

The PDF document contains numerous links, including one pointing to a known malicious redirector infrastructure at `ttraff.ru`. The document body text and embedded links are designed to lure users into downloading what appears to be an accounting book, but the primary link redirects to a malicious URL. This indicates a phishing or social engineering attack aimed at directing users to malicious content.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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=download+buku+akuntansi+perbankan+pdf
    • http://guwifubow.gsuitegurus.com/uploads/1/3/2/3/132302782/a287509.pdf
    • http://files.kozynook.com/uploads/1/3/0/7/130776123/9d1482be30c27b1.pdf
    • http://files.emma-brierley.com/uploads/1/3/1/4/131483400/gunezugorad-porakajarotareb.pdf
    • http://files.thefrontpaige.co/uploads/1/3/1/3/131384468/xabuzojukok_bimorirafogulip_pabinizakubex_zomofezugomev.pdf
    • https://cdn.shopify.com/s/files/1/0434/2707/0104/files/79202999215.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0439/5145/6411/files/vadaresuris.pdf
    • https://cdn.shopify.com/s/files/1/0438/0796/5345/files/ragnarok_guild_emblem.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1173/files/turn_off_autofill_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0436/0188/7396/files/tuvagipixuja.pdf
    • https://cdn.shopify.com/s/files/1/0438/1310/9917/files/bozatenife.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/mitojowasuledixama.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2467/files/zikekozo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0364/0993/files/poxizatef.pdf
    • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/33040564249.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_off000077d1.bin
4a8db06ead86569de28350c13a503697736a2ed87c3ca0c0740dd68fce8e1dff
pdf-font-stream PDF embedded font (sfnt) at offset 0x77D1 5212 bytes
font_01_sfnt_off000089a6.bin
fcc25d36b27b2a3275355e0a6aba9429085fec605edd4310e4b81a1307e77f4c
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A6 10344 bytes
font_02_sfnt_off0000acb0.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xACB0 4324 bytes