Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b178dce9ba2bf8…

MALICIOUS

PDF

35.0 KB Created: 2020-08-20 08:21:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75889849703d7eaba6e151ff439d222c SHA-1: ba0ae20deee0bd59ef751b26d2892be00d4cfea3 SHA-256: 99b178dce9ba2bf80670c26ad6c1d36731a26ffcc59f3421dbfdf5b364242229
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm designed to appear as a workbook answer key, but the primary link redirects to a known malicious domain (ttraff.ru). This indicates a social engineering attempt to direct users to malicious infrastructure. The PDF structure and embedded links suggest a link-based distribution method, likely for phishing or malware delivery.

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=medical+terminology+for+health+professions+workbook+answers
    • http://files.hitch-n-stitch.com/uploads/1/3/1/8/131857419/e6d906435a.pdf
    • http://files.pvcseagles.com/uploads/1/3/1/3/131381658/wuzedurojejerawuso.pdf
    • http://files.bolderlegal.com/uploads/1/3/1/3/131381519/1a0681d560e.pdf
    • http://zebisubom.varietyville.net/uploads/1/3/0/8/130874284/3976175.pdf
    • http://files.coastguardinvestigativeassociation.org/uploads/1/3/2/7/132740978/975d819b789.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9557/files/76918424632.pdf
    • https://cdn.shopify.com/s/files/1/0434/8238/2502/files/10193382582.pdf
    • https://cdn.shopify.com/s/files/1/0432/4160/3239/files/4851804688.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/94170380923.pdf
    • https://cdn.shopify.com/s/files/1/0429/0042/2819/files/52536068657.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61066914906.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/jumoxaliwijel.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1825/files/61818967460.pdf
    • https://cdn.shopify.com/s/files/1/0432/0113/4747/files/xolilapudixapata.pdf
    • https://cdn.shopify.com/s/files/1/0434/6619/5106/files/10546634765.pdf
    • https://cdn.shopify.com/s/files/1/0429/7857/4490/files/sokoxixoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/9480/9512/files/zidajiju.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_off00004b50.bin
16d26e6f3b72ea12375c1574374d9fea8a922fe9f4f9b0665222ba259cfa6de5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B50 5972 bytes
font_01_sfnt_off00005f8d.bin
f57d1ec6c65bcd288e70b7a5a9a2270b5aacc75e50b4586ae3c41b4293a4b262		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8D 9152 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.