Malicious PDF — malware analysis report

Static analysis result for SHA-256 c25593225ea7f557…

MALICIOUS

PDF

39.5 KB Created: 2020-08-19 10:16:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb1cb9757920a71eb56cfc0f6c13e8e SHA-1: 60b2e9de965fcd79b05772780be96bad03988c97 SHA-256: c25593225ea7f557e4d4183d72983bbd065a1c98da76f71f8242d7ba7ccb410d
140 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.ru/pify?keyword=bodum+electric+coffee+grinder+manual, which is likely used to lure users into clicking on a malicious link. The presence of numerous PDF links suggests an attempt to manipulate search engine results or distribute malicious content through a link farm.

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=bodum+electric+coffee+grinder+manual
    • http://files.jjenterpriseslcd.com/uploads/1/3/1/8/131871467/fuwikunu_sufekevena_nuzofun_vabekedidadow.pdf
    • http://wibop.thunderheadstudios.com/uploads/1/3/1/8/131857114/mizibiwajiki-fasujopudilo-tuxutox-fajexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/4827/1014/files/zopabelikowowovepe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7054/6329/files/47642485911.pdf
    • https://cdn.shopify.com/s/files/1/0428/3649/2444/files/asturias_isaac_albeniz_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0437/1664/0917/files/85026598729.pdf
    • https://cdn.shopify.com/s/files/1/0433/8283/3308/files/14119058299.pdf
    • https://cdn.shopify.com/s/files/1/0431/3032/3095/files/aw_rp120_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/rukuwisorukusugivototi.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/36612914616.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_off00005d74.bin
80f2e8bb05b6a72377e65b9910b29538a095b06cbe271220b07a2a9a9247c242		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D74 5212 bytes
font_01_sfnt_off00006f15.bin
bf3918492a4f290553e0eb2e447db03a8241dcc6dcd7190525f0d634dcc6fc5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F15 10032 bytes

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