Malicious PDF — malware analysis report

Static analysis result for SHA-256 9345bfa94886ce88…

MALICIOUS

PDF

109.9 KB Created: 2020-09-21 01:03:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2d2a3a44a258a5e0ef738c7a74df679 SHA-1: 942735ec29536308c35f3d83b3299cf7ed8ab0f7 SHA-256: 9345bfa94886ce880a2c57ce8570ddb71ebf3f65b254701b427acbf89103f73c
152 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The primary malicious URL identified is ttraff.com, which is likely used to funnel users to a phishing or malware site. No scripts were extracted, limiting the analysis of specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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/wix?keyword=personajes+de+rapidos+y+furiosos+2
    • https://cdn.shopify.com/s/files/1/0440/1302/7486/files/lufasupukasijezapumi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4294/files/agrger_deux.pdf
    • https://cdn.shopify.com/s/files/1/0432/8167/8494/files/zemarusuvitomugog.pdf
    • https://cdn.shopify.com/s/files/1/0429/8987/9445/files/92650257802.pdf
    • https://cdn.shopify.com/s/files/1/0481/5447/6693/files/59517222516.pdf
    • https://ec0c4a51-856b-4507-9e29-dbad99d7125e.filesusr.com/ugd/6e3131_a4554faf43d94fe3b73db6d18875ef4c.pdf?index=true
    • https://e80f27f6-2242-4f18-9a29-28c6ba0e2d4c.filesusr.com/ugd/d162e3_9f2010ce7ba1411f881f581201312266.pdf?index=true
    • https://4351fec0-b101-4cfa-9b81-82865d5a91bf.filesusr.com/ugd/9df9d6_8d0e5ec40fdd4b60bc9bbcdc5dfc0660.pdf?index=true
    • https://425f8b3a-ae91-4f71-8e1a-e1dba9d9a57b.filesusr.com/ugd/592671_505333247d51495797f8685c93d5ee09.pdf?index=true
    • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000158c0.bin
8ae32ed4e557065200f5d40723b569d45737139afef570b6db740d115ffabb40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x158C0 3332 bytes
font_01_sfnt_off00016492.bin
94ccab4306967ae2bdf46423fbe6ce046693e98dce77c3175f9e8532c2f6f4d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16492 5116 bytes
font_02_sfnt_off0001760e.bin
a578377fef6d76d0715e0fe76c9949fe9c20256932668bddd465f7970c864d19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1760E 11700 bytes
font_03_sfnt_off00019c22.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x19C22 4324 bytes

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