Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6bec85d4cfa0556…

MALICIOUS

PDF

47.3 KB Created: 2020-08-14 10:13:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83b8b46a4aaacf801d66f39d3dc45774 SHA-1: 6e47cfdb98967ab3cbe68ceb97e6612b1db06ea6 SHA-256: a6bec85d4cfa055643f4ac73ff1f00c263c2d2b3adc7ca6c271a02d057579de5
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, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=accused+no+1+songs+free', appears to be the primary lure. The document also contains a large number of embedded links, many pointing to Shopify, which is flagged as a link farm. No scripts were extracted from this sample, but the presence of the malicious redirector suggests a phishing or malware distribution attempt.

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=accused+no+1+songs+free
    • http://wugad.maysplumbingworks.com/uploads/1/3/1/4/131453027/1303030.pdf
    • http://files.stitchingkisses.com/uploads/1/3/2/6/132683264/24e0fcdd8.pdf
    • http://files.neurodevelopmentandhealingbydesign.com/uploads/1/3/2/6/132682655/7488133bf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/60423226397.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90067119925.pdf
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/57137687465.pdf
    • https://cdn.shopify.com/s/files/1/0434/7628/7648/files/66513658154.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/e36_m3_wheels.pdf
    • https://cdn.shopify.com/s/files/1/0438/3513/0018/files/amplitude_modulation_practical.pdf
    • https://cdn.shopify.com/s/files/1/0432/0663/9779/files/tegepa.pdf
    • https://cdn.shopify.com/s/files/1/0430/9290/2039/files/sopijakutotokexekofixa.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/78255063067.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/taxunelo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/50311512426.pdf
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/73251989099.pdf
    • https://cdn.shopify.com/s/files/1/0432/7188/0870/files/57191163102.pdf
    • https://cdn.shopify.com/s/files/1/0434/5652/8544/files/nivajazomarovorinuzewa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/bluebook_19th_edition_free_download.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_off000066bf.bin
581c09e5bc12cadaa5dce741155c240e58191121481654a0ab0aec6903328140
pdf-font-stream PDF embedded font (sfnt) at offset 0x66BF 4988 bytes
font_01_sfnt_off000077c1.bin
f87d55b0e8a97e82c576334e14804de5866733506e84762a56fa60000ab8836c
pdf-font-stream PDF embedded font (sfnt) at offset 0x77C1 7188 bytes
font_02_sfnt_off00008c30.bin
47b9b5e7f8dab9811066394864d248c2d947e8ba40181fb8035725b06a2fde1d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C30 10548 bytes