Malicious PDF — malware analysis report

Static analysis result for SHA-256 fadf6c490c7b2a60…

MALICIOUS

PDF

41.4 KB Created: 2020-08-28 16:24:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40394f1fb1fdbe9cb61ffd6ff1dc0aa1 SHA-1: 2cec6a82922650b7ac0a00c659c3c650bfbc5eab SHA-256: fadf6c490c7b2a60f49e17e9b589cd6da72f3eb6c2b7357fc50ca1d25b9b6ac3
120 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'live video chat' which is a common lure for malicious sites. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms that the primary URL, https://ttraff.cc/pify?keyword=live+video+chat, leads to known malicious redirector infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates the document is part of a larger campaign to generate traffic via numerous PDF links, with the first identified link pointing to a Shopify domain hosting another PDF. The document body, though partially corrupted, contains the lure text and the malicious 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.cc/pify?keyword=live+video+chat
    • http://files.campspirit.ca/uploads/1/3/1/8/131871705/rorizafafedano.pdf
    • http://sudamejon.mannahomesne.com/uploads/1/3/1/1/131163599/dosomuwowote.pdf
    • http://dijokix.nhvfd18.org/uploads/1/3/0/7/130739595/pewukewuxenamuv_tiwad_tuwudoguzolol_mopab.pdf
    • http://files.joyceclp.com/uploads/1/3/0/8/130873822/reraturu.pdf
    • http://files.buffalobrewinghistory.com/uploads/1/3/1/4/131454352/e0ffaecea.pdf
    • https://cdn.shopify.com/s/files/1/0441/0654/7352/files/lesikidutek.pdf
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/vebezivolewi.pdf
    • https://cdn.shopify.com/s/files/1/0429/3092/9827/files/93407224916.pdf
    • https://cdn.shopify.com/s/files/1/0440/1784/4382/files/lirirowazizaxupovimuja.pdf
    • https://cdn.shopify.com/s/files/1/0463/2025/5138/files/xovufunikovurudiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/1136/6309/files/benejawilowavaxavemopate.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/5322957096.pdf
    • https://cdn.shopify.com/s/files/1/0429/9689/1807/files/notidam.pdf
    • https://cdn.shopify.com/s/files/1/0434/5731/4977/files/geometric_symbols_in_engineering_drawing.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/gukinovolutixirafawifida.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/poboletirireretek.pdf
    • https://cdn.shopify.com/s/files/1/0436/0926/0190/files/reading_cvc_words.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_off00006681.bin
48ef50a00c5b2b593cecb5b5c61be535fe19de8d4d595ed1b2faa07714d43229
pdf-font-stream PDF embedded font (sfnt) at offset 0x6681 4720 bytes
font_01_sfnt_off00007689.bin
28da181b6b095ca69dd217dba19aa860bbbc7b5ce0a2eeb073c476b4ce765af3
pdf-font-stream PDF embedded font (sfnt) at offset 0x7689 10120 bytes