Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbb9ae54850c059b…

MALICIOUS

PDF

44.3 KB Created: 2020-08-18 15:24:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6179a6aa183e192f6930aa0e94ddf1c0 SHA-1: 760344da9e242c2ed63db0e9d9c293cbd7c7a980 SHA-256: cbb9ae54850c059bef73c34276a8673987630160614cf21574c41b944001e349
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised with a keyword related to popular media. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious intent appears to be redirecting the user to potentially harmful content via the ttraff.ru URL.

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=ben+10+hollywood+tamil+dubbed+movie
    • http://namexija.arlenemurphyart.com/uploads/1/3/1/4/131453194/9158778.pdf
    • http://files.hollyslegacy.com/uploads/1/3/2/7/132741389/7427948.pdf
    • http://files.sacredheartepri.com/uploads/1/3/1/4/131408465/fozixevajarif_sanupusowogo_kawusuvekoxagu_fetowosekebu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1968/1437/files/riwesadakiketofakuvomaruw.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/nivem.pdf
    • https://cdn.shopify.com/s/files/1/0448/7141/8018/files/noremovunabotefirib.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/45349752964.pdf
    • https://cdn.shopify.com/s/files/1/0431/5866/7415/files/songs_of_a_dead_dreamer.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6009/files/pvc_roof_insulation_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/7512/5923/files/66546900058.pdf
    • https://cdn.shopify.com/s/files/1/0437/1234/8314/files/possessive_form_of_witness.pdf
    • https://cdn.shopify.com/s/files/1/0439/3166/4552/files/98037788546.pdf
    • https://cdn.shopify.com/s/files/1/0439/7475/4462/files/xukojavivoveras.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_off00006dfe.bin
cd0ada2187dcc68fcf42e70b9b464bdd746bdf0cbb6d1591482d72d35ef45ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFE 5428 bytes
font_01_sfnt_off00008069.bin
ba7e05b37f8ac20f9b7684f2331172d396a4dbe7f7a7a567336107ebfb47545e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8069 10600 bytes

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