Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0a8fa06b9c68e2f…

MALICIOUS

PDF

47.1 KB Created: 2020-08-01 08:40:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 956b0f7508e1076a4af5f9a455db611f SHA-1: 2484ac294df27daa63db22ea3e25c729c631af6b SHA-256: a0a8fa06b9c68e2fcd54efec34dbe204abb114e5a0da595ec6a878dab85ad78b
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with the heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifying a link to ttraff.ru, a known malicious redirector. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, suggesting an attempt to create a link farm for SEO manipulation or to distribute malicious content. No scripts were extracted from this sample, but the presence of numerous links points towards a delivery mechanism for further malicious activity.

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=ir+2135+ti+max
    • http://files.honeyhopfarm.com/uploads/1/3/1/4/131438211/4865270.pdf
    • http://files.firstresponseland.com/uploads/1/3/0/9/130969048/6938680.pdf
    • http://files.anxietytherapysf.com/uploads/1/3/2/6/132683014/bupiz-sotexejiv-ruvewupudagaled-numavajegirub.pdf
    • http://files.fumcrutherfordton.org/uploads/1/3/2/6/132695663/kozesekonib_wikuko_xazitodugifilog.pdf
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/32019729795.pdf
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/honda_rincon_650_service_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/9341/7366/files/mitenofawopekoxuvalewar.pdf
    • https://cdn.shopify.com/s/files/1/0430/3234/6773/files/61127195354.pdf
    • https://cdn.shopify.com/s/files/1/0437/7667/1895/files/46174128013.pdf
    • https://cdn.shopify.com/s/files/1/0433/8545/4757/files/32370980005.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7568/files/chemistry_olympiad_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/6415/6582/files/minecraft_minigame_servers.pdf
    • https://cdn.shopify.com/s/files/1/0431/5086/8646/files/loxerib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/81360937464.pdf
    • https://cdn.shopify.com/s/files/1/0432/4687/8882/files/bunagujusi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5905/9615/files/nobikasolibikojukaxavofog.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0436/6496/5782/files/63836756195.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000629e.bin
37f98e205803d712ad53f6c83b49138236db75172ac90cb7b9847a4994649342
pdf-font-stream PDF embedded font (sfnt) at offset 0x629E 4552 bytes
font_01_sfnt_off000071fb.bin
35488f4cbedc9ecc57ab8823257e593c84e19eed79c19c858dd9d505a8c29f5c
pdf-font-stream PDF embedded font (sfnt) at offset 0x71FB 15528 bytes
font_02_sfnt_off00009fee.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FEE 4324 bytes