Malicious PDF — malware analysis report

Static analysis result for SHA-256 47443e23dae52a12…

MALICIOUS

PDF

39.4 KB Created: 2020-08-25 18:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 015561f367c0f3be79363c525f0398b5 SHA-1: b84543ace2e717033aa0e9ce841e69268ca0d586 SHA-256: 47443e23dae52a12ba3ecb37112f601cdc8f2d62d96660acedfab040e15cb804
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=dhcp+option+82+cisco, is embedded within the document body and is likely used to direct users to a phishing or malware-hosting site. The presence of numerous other links, many hosted on cdn.shopify.com, suggests an attempt to obscure the final destination or to leverage benign infrastructure for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=dhcp+option+82+cisco
    • http://files.meadrdmardigras.org/uploads/1/3/2/6/132696351/d59ef3d.pdf
    • http://vipitigi.mansfieldmochamber.com/uploads/1/3/0/7/130739415/4130049.pdf
    • http://zobom.keatonshapiro.com/uploads/1/3/2/6/132681579/5d46090.pdf
    • https://cdn.shopify.com/s/files/1/0428/2155/0247/files/55956164137.pdf
    • https://cdn.shopify.com/s/files/1/0432/7548/5339/files/85275239142.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/8072085291.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/xevozijagijegupu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4146/5244/files/anandamath_in_bengali.pdf
    • https://cdn.shopify.com/s/files/1/0438/9430/9019/files/aapc_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/14360342473.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9798/files/27267643283.pdf
    • https://cdn.shopify.com/s/files/1/0430/0380/5847/files/pubowenufararewibowizepi.pdf
    • https://cdn.shopify.com/s/files/1/0438/8130/0123/files/phase_2_biotransformation_enzymes.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nosisuzamozozi.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_off00005e59.bin
636059a3e32f6f64208d0d4df1c722c5c757152e3d3bb1b720aa50f205afe239		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E59 5008 bytes
font_01_sfnt_off00006f6e.bin
26bf8d5c19492cbdf8c06367a8a589dabc7f1611a268c5530107598871d47a3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6E 9828 bytes

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