Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a3f9f4cb33c32c…

MALICIOUS

PDF

43.5 KB Created: 2020-08-21 07:24:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42a65ccd151595bc56f0a7ebd47fecaa SHA-1: 767cfa020c1fc73e774083bca7c27f052fb36f05 SHA-256: e1a3f9f4cb33c32c1d5ae4df66a998a9f7275cbc6a9338b4502a0129fcaa2a92
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=boss+me-+80+user+manual'. This URL is presented within the document body, disguised as a user manual, to entice users to click. The file also exhibits a PDF link farm heuristic, indicating a large number of outbound links, many of which are hosted on Shopify but likely serve as a distraction or camouflage for the primary malicious redirector.

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=boss+me-+80+user+manual
    • http://botepi.shineondyez.com/uploads/1/3/0/8/130873995/6274078.pdf
    • http://jatof.yogabellaire.com/uploads/1/3/2/7/132712615/6842359.pdf
    • http://fewepire.hootandhollerpr.com/uploads/1/3/1/4/131409090/nelanowizise.pdf
    • https://cdn.shopify.com/s/files/1/0434/0026/5878/files/under_the_dome_stephen_king.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/73657786827.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7174/files/gekodatapeseja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7764/8027/files/biguj.pdf
    • https://cdn.shopify.com/s/files/1/0434/4777/9478/files/jekagoravekovu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7817/9221/files/bodaxasofalozuwasodez.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3982/files/budaya_populer_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/4649541375.pdf
    • https://cdn.shopify.com/s/files/1/0438/4463/2738/files/list_of_compound_adjectives_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0431/7013/6220/files/topola.pdf
    • https://cdn.shopify.com/s/files/1/0448/2993/3725/files/beowulf_full_text_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/47479047574.pdf
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/38474230875.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_off00006d8e.bin
183fb7b6b3688eb18c1e1fdf9ac2d709e1e1df844258af6b321c59d923452b17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D8E 5248 bytes
font_01_sfnt_off00007f44.bin
0dbd1bf67dc813da553297549781d5d064fc0b7e3f446f4276fdcf85a2a9e698		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F44 9828 bytes

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