Malicious PDF — malware analysis report

Static analysis result for SHA-256 98db045cd7dec096…

MALICIOUS

PDF

36.6 KB Created: 2020-08-02 13:43:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 95ff0f7b4e4db8eabb19da9bf22e4abc SHA-1: 7e12b8684b4b5a9a2379e6c3a38d6dbbd994c38b SHA-256: 98db045cd7dec0963ad215cff9c447af394bf4387709b39fb4be3b1b89e733f4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting PDF files. One primary link, 'https://ttraff.ru/pify?keyword=pmbok+5th+edition+pdf+download', is identified as a malicious redirector. This suggests the document is designed to funnel users through a link farm, potentially leading to malicious content or phishing sites, under the guise of providing access to a popular technical book. No scripts were extracted from this sample.

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=pmbok+5th+edition+pdf+download
    • http://files.churchillcalgary.ca/uploads/1/3/0/7/130775750/bawelowixiv.pdf
    • http://files.ansuschoolofsound.com/uploads/1/3/1/4/131453194/b0906070fb.pdf
    • http://files.wishlistprague.com/uploads/1/3/1/4/131437276/3375330.pdf
    • http://files.alicefernandes.com/uploads/1/3/2/7/132740408/zikifakam.pdf
    • https://cdn.shopify.com/s/files/1/0437/9272/8226/files/94802923371.pdf
    • https://cdn.shopify.com/s/files/1/0434/0239/5798/files/bokegulerodaradasupelej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80835258875.pdf
    • https://cdn.shopify.com/s/files/1/0432/0657/4240/files/tilogazupifuletujuwimopud.pdf
    • https://cdn.shopify.com/s/files/1/0435/4375/6954/files/530053131.pdf
    • https://cdn.shopify.com/s/files/1/0435/8340/6239/files/56506840269.pdf
    • https://cdn.shopify.com/s/files/1/0434/8785/4749/files/kozogikoribagawexanis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4386/4224/files/dnd_5e_giant_toad.pdf
    • https://cdn.shopify.com/s/files/1/0440/4117/5190/files/64572718503.pdf
    • https://cdn.shopify.com/s/files/1/0430/3863/8241/files/90591578987.pdf
    • https://cdn.shopify.com/s/files/1/0438/2969/0528/files/banawepawegogajaj.pdf
    • https://cdn.shopify.com/s/files/1/0438/1107/8301/files/85992361606.pdf
    • https://cdn.shopify.com/s/files/1/0439/4336/2715/files/juronuzujabiwimebomopig.pdf
    • https://cdn.shopify.com/s/files/1/0431/3900/6632/files/mufogedalu.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_off0000512b.bin
4eaf22d1e423e4590db43990037f0c0f3ef2a192a1ee912fcd43f5d6037a5b54
pdf-font-stream PDF embedded font (sfnt) at offset 0x512B 5428 bytes
font_01_sfnt_off00006391.bin
00059b81a7d38607619190549d5cff7bd6ad1585445ebabe2889a62d2fb5e530
pdf-font-stream PDF embedded font (sfnt) at offset 0x6391 9916 bytes