Malicious PDF — malware analysis report

Static analysis result for SHA-256 122037bf93a06560…

MALICIOUS

PDF

46.0 KB Created: 2020-08-19 05:44:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fee133b0b340a4e0caf83c504390302 SHA-1: 1998d4f49fbf689e0063c3799113cb89eff8e8d1 SHA-256: 122037bf93a06560f85e3dff76ae543a7904e5024e3cf2bf9c57b962cdd74eac
162 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.ru'. The document body also contains the same URL, presented as a 'risk assessment heat map template excel' download lure. This suggests the document is designed to trick users into visiting a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=risk+assessment+heat+map+template+excel
    • http://files.stillpointcentre.org/uploads/1/3/0/7/130776366/bifinew_jowawuzavux.pdf
    • http://files.ceciliatrono.com/uploads/1/3/0/7/130740142/1008180.pdf
    • http://files.face2facewithhorses.com/uploads/1/3/1/6/131637150/8156513c8f50a.pdf
    • http://files.prodanpianostudio.com/uploads/1/3/1/0/131070459/jubagonarikisefavuf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/2961/7057/files/15541747887.pdf
    • https://cdn.shopify.com/s/files/1/0432/5978/9472/files/zigobifigafefigeles.pdf
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/39040536724.pdf
    • https://cdn.shopify.com/s/files/1/0432/6221/4304/files/1501748369.pdf
    • https://cdn.shopify.com/s/files/1/0428/5890/5759/files/lidawisizikagukobusukej.pdf
    • https://cdn.shopify.com/s/files/1/0438/3444/1885/files/how_to_add_slide_template_in_powerpoint.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/49413194267.pdf
    • https://cdn.shopify.com/s/files/1/0447/8484/4949/files/71566508187.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/fomujuzusutokaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/airsonic_android_auto.pdf
    • https://cdn.shopify.com/s/files/1/0427/4742/9031/files/formal_letter_writing_examples.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000712b.bin
b8b7d5906aea1ac09236095d15e45e82ae5bda43d01e08aecd32843a6ad6ea19		 pdf-font-stream PDF embedded font (sfnt) at offset 0x712B 5216 bytes
font_01_sfnt_off000082c1.bin
92462b67f213df1483e44e54728a6c7a8451e0923b90ceb9c2f5a5e9a509cbeb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82C1 12460 bytes

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