Malicious PDF — malware analysis report

Static analysis result for SHA-256 9260ba42514f6e83…

MALICIOUS

PDF

38.9 KB Created: 2020-08-07 00:54:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81592b5a620b876a2c233c74af0d2626 SHA-1: e4d492954e270824f30753d201c43570e4e2bf93 SHA-256: 9260ba42514f6e83145d6747ff9cc2b36e1a5e678f39be4c5bb2124445f2987b
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to redirect users to malicious sites. One critical heuristic specifically flagged the PDF as a link farm pointing to known malicious redirector infrastructure. While no scripts were extracted, the sheer volume of links and the critical heuristic firing strongly suggest a malicious intent to lure users to compromised or malicious domains.

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.com/pify?keyword=cartoon+cute+animals+christopher+hart+pdf
    • http://files.daretodreamweddingswi.com/uploads/1/3/1/8/131857970/582436.pdf
    • http://files.kspaceonline.com/uploads/1/3/1/3/131380868/b7e90.pdf
    • http://jagaguxe.coreagritech.com/uploads/1/3/2/6/132681352/zazovelenulexoxufe.pdf
    • http://kepug.mahonebayscarecrowfestival.com/uploads/1/3/1/3/131384635/1492013.pdf
    • http://files.findmyireland.com/uploads/1/3/1/4/131453214/323924.pdf
    • https://cdn.shopify.com/s/files/1/0438/6865/1680/files/bofifunukemefeki.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/kefesanisitenavemomuna.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/tifewakofinivan.pdf
    • https://cdn.shopify.com/s/files/1/0440/3298/3205/files/94489124762.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.pdf
    • https://cdn.shopify.com/s/files/1/0430/4338/9597/files/93057872702.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/79498467700.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/nojutaruxojujukiget.pdf
    • https://cdn.shopify.com/s/files/1/0432/4936/9252/files/70549847183.pdf
    • https://cdn.shopify.com/s/files/1/0435/6793/9743/files/chapter_33_apush.pdf
    • https://cdn.shopify.com/s/files/1/0430/7389/6602/files/sorcerer_wizard_spells_pathfinder.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0234/files/nepulowedigolaru.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/65468400995.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_off00005a87.bin
615bddfc256d8e428878805ce6c5262676b1bf9fe9268111609da6c2f6ca8330
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A87 5300 bytes
font_01_sfnt_off00006c60.bin
a4673d14c8ff2dc087384c0d4e6281b0006e95e7ae1e6ab732cb7beffdec94b3
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C60 9996 bytes