Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf2aa7977ed470c7…

MALICIOUS

PDF

43.8 KB Created: 2020-08-24 15:09:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40ea3b7c07289c47febb82fafbb121ed SHA-1: 830fef727df7eb7fbdad9540f46f247ea598e0fd SHA-256: bf2aa7977ed470c70c1e27f1666e3297ecccf15ceb416257503703d4a165ae5f
160 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=breaking+news+intro+music'. The document body also contains this URL and numerous other links, many hosted on cdn.shopify.com, suggesting a link farm or content distribution strategy. The 'SE_REMOTE_SUPPORT_LURE' heuristic indicates the document's content likely instructs the user to engage with remote support tools, a common social engineering tactic. The presence of a malicious redirector and the lure suggest the primary goal is to trick the user into visiting a malicious site.

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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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=breaking+news+intro+music
    • http://files.onlinesms.com/uploads/1/3/0/7/130775109/zoxevagexisoji.pdf
    • http://files.carenharrisphotography.com/uploads/1/3/0/7/130739022/jokuju.pdf
    • http://files.imcbrands.com/uploads/1/3/1/4/131409017/eb24ade.pdf
    • https://cdn.shopify.com/s/files/1/0434/8893/6102/files/helping_verbs_exercises_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0452/3737/1037/files/articles_in_english_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2347/files/9730509260.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.pdf
    • https://cdn.shopify.com/s/files/1/0430/2353/2195/files/madadagilagutalus.pdf
    • https://cdn.shopify.com/s/files/1/0437/3918/5303/files/watapilovoxujix.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7389/files/resume_reference_page_example.pdf
    • https://cdn.shopify.com/s/files/1/0431/9058/3464/files/ripadudiruxaxogapom.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/alif_ba_ta.pdf
    • https://cdn.shopify.com/s/files/1/0437/9105/7058/files/que_es_un_bosque_tropical.pdf
    • https://cdn.shopify.com/s/files/1/0437/9626/7165/files/bobilubu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0416/6297/files/sozuzibemokil.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_off00006f07.bin
9b56a1358ae8c46d852ba33ffcfc683ef10a68820f312526ec131c3b13efd6d5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 5292 bytes
font_01_sfnt_off00008106.bin
a37ca12787d0175a8ae34550e93d96741564fe1fe70b20c35c84a885ceb40aff
pdf-font-stream PDF embedded font (sfnt) at offset 0x8106 9852 bytes