Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f59df382feaae5c…

MALICIOUS

PDF

31.1 KB Created: 2020-08-20 19:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c8a383b347e5c691625db5c4e6d19903 SHA-1: 168a0baa18b1e0460fc75199bd55ed1165c2df92 SHA-256: 5f59df382feaae5c6101eec45619d3e605f9e69c253c72e6f62dbc9a9a4725a7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. This indicates an attempt to lure users to potentially harmful content. The document body also contains this URL, reinforcing its malicious intent. The presence of numerous other PDF links, while some are benign, suggests a link farm or redirection strategy.

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.ru/pify?keyword=anganga+afiki+video
    • http://files.angeladaley.com/uploads/1/3/1/3/131381553/7454805.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/49331653038.pdf
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/swokowski_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0434/7042/2180/files/tamil_love_album_song_status_video.pdf
    • https://cdn.shopify.com/s/files/1/0431/5326/0701/files/fipumowix.pdf
    • https://cdn.shopify.com/s/files/1/0447/4391/7719/files/android_bitmap_to_byte_array.pdf
    • https://cdn.shopify.com/s/files/1/0432/0254/3778/files/lipivakon.pdf
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/75860879833.pdf
    • https://cdn.shopify.com/s/files/1/0435/0997/3147/files/butler_volmer_equation.pdf
    • https://cdn.shopify.com/s/files/1/0437/7070/8125/files/97012536945.pdf
    • https://cdn.shopify.com/s/files/1/0433/2024/6427/files/zajepakamofapegusato.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_off00003f45.bin
16b0ea70a1615b63afe5df764bac1f135913b2e376117a6a9ee57d0b7c5d3d17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F45 4884 bytes
font_01_sfnt_off00005004.bin
6b587319564339bc8830cf6b4eb9083eef81b3a5d02243c6e519197f2665b8ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5004 9420 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.