Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d148fc727eecf44…

MALICIOUS

PDF

44.3 KB Created: 2020-08-13 22:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74711ff23c85f9b20841eda90c52648b SHA-1: 795034b0d320b3a625d07caa82d30bf27235436f SHA-256: 0d148fc727eecf447c5d2e8e5bff70557d48b852731494ed8152d3da24b13e70
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to funnel victims to malicious content. The document body, though heavily obfuscated, contains this URL and numerous other links to PDF files hosted on Shopify, suggesting a link farm or content distribution network for malicious payloads. The ML classifier strongly indicates maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.com/pify?keyword=greystones+guide+la+touche
    • http://files.bcarrollconsulting.com/uploads/1/3/0/8/130815311/e03ef8.pdf
    • http://files.jingarriguewine.com/uploads/1/3/0/8/130874086/5cfc01.pdf
    • http://lotozani.sjcustompaint.com/uploads/1/3/1/6/131637136/kitekevarupef.pdf
    • http://files.mysustainablefashion.com/uploads/1/3/2/3/132303082/7bc5f3e2.pdf
    • http://zobujoz.branchingtogether.com/uploads/1/3/1/4/131437792/4f9997b4131.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/58091839687.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/wobojiga.pdf
    • https://cdn.shopify.com/s/files/1/0431/6751/4788/files/92570632991.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6325/files/32587188541.pdf
    • https://cdn.shopify.com/s/files/1/0440/9786/3832/files/45285497056.pdf
    • https://cdn.shopify.com/s/files/1/0436/7027/4201/files/bangladesh_map_high_resolution.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/87964512821.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/cultivo_de_cajanus_cajan.pdf
    • https://cdn.shopify.com/s/files/1/0437/0658/1147/files/misanemosojesuzasuga.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/50136721126.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000061be.bin
1e6b9d10da8591ffb14a258fbf770468b448d3756b481de3a74e7eae0e51a7ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61BE 5216 bytes
font_01_sfnt_off0000737f.bin
99fe5a54ec478ba45ca7a0c71920a052deb8ee51e5a72e96ff3d55511ccec555		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737F 10136 bytes
font_02_sfnt_off0000964b.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x964B 4324 bytes

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