Malicious PDF — malware analysis report

Static analysis result for SHA-256 38acddeb68cabd30…

MALICIOUS

PDF

35.2 KB Created: 2020-08-12 16:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 658b76e725b066ff919edddab1e1b952 SHA-1: 49f7978e883ae62419ca34209fbc2d9dcb791e3f SHA-256: 38acddeb68cabd30eb4ec6c94000e0f0bf3914e98f4896765dc94b3e3f444f8b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=pharmacy+biochemistry+books+pdf'. Additionally, it exhibits a PDF link farm heuristic, embedding numerous external links, many of which point to Shopify domains hosting PDF files. The document body also contains these URLs, reinforcing the attack pattern of luring users to external malicious or potentially malicious content. 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.cc/pify?keyword=pharmacy+biochemistry+books+pdf
    • http://files.sora-ma.com/uploads/1/3/1/8/131871633/edfec1a0.pdf
    • http://poxobij.georgianbaycoyotes.com/uploads/1/3/2/6/132681670/75d509615d5.pdf
    • http://files.wendyvanderdrift.com/uploads/1/3/1/6/131637194/c2dc31304e.pdf
    • http://files.argoscanada.com/uploads/1/3/2/6/132681394/mosez-wulafagisifadex-webusaz-kewodoju.pdf
    • http://files.rhworkplace.com/uploads/1/3/1/3/131384025/sepewi.pdf
    • https://cdn.shopify.com/s/files/1/0436/5815/0046/files/difference_between_conductor_semiconductor_and_insulator.pdf
    • https://cdn.shopify.com/s/files/1/0435/6092/7393/files/symbiotic_nitrogen_fixation.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6348/files/byomkesh_bakshi_file_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/raradesagagelotifeninek.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/30424730326.pdf
    • https://cdn.shopify.com/s/files/1/0434/0642/6266/files/aksum_an_african_civilisation_of_late_antiquity.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/dien_dan_mau_tam.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/fasijokujaxogasesedola.pdf
    • https://cdn.shopify.com/s/files/1/0429/9918/5561/files/disopuropiwalipaxob.pdf
    • https://cdn.shopify.com/s/files/1/0439/4736/0424/files/30106995561.pdf
    • https://cdn.shopify.com/s/files/1/0433/5114/6650/files/xigabezokigusegegejamoxo.pdf
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/34592824220.pdf
    • https://cdn.shopify.com/s/files/1/0429/9656/4131/files/wulefukexavimefosonozoj.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_off00004ae0.bin
9d417e2122329088164d8a501b19367949044b77a31a3649491ab37a608d8ad9
pdf-font-stream PDF embedded font (sfnt) at offset 0x4AE0 5672 bytes
font_01_sfnt_off00005e01.bin
6ee94eb59631bab62dbb055e91ae6ee87bf3f0be65ef800c2b1805fc0f744c0d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E01 9884 bytes