Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f160886026237c9…

MALICIOUS

PDF

43.0 KB Created: 2020-07-10 00:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e23a70d968e32b602b4077239197dece SHA-1: 0857d5068334f8350c216507d38a5b22cdaaeec4 SHA-256: 3f160886026237c9bfda9d5b5f5a8d39e98fadc9546854e6768e542e9dc79e3b
154 Risk Score

Malware Insights

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

This PDF document contains a lure related to 'CCNA Packet Tracer Labs PDF' and embeds a significant number of external links. One critical heuristic indicates these links point to known malicious redirector infrastructure, specifically 'https://ttraff.cc/wb?keyword=ccna%20packet%20tracer%20labs%20pdf'. The presence of a large link farm suggests an attempt at SEO manipulation or distribution of further malicious content. No scripts were extracted from this sample.

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.cc/wb?keyword=ccna%20packet%20tracer%20labs%20pdf
    • http://files.mindfulprograms.com/uploads/1/3/0/8/130814909/bolofugekim.pdf
    • http://files.brushdartistry.com/uploads/1/3/1/3/131384599/baff82969dc4.pdf
    • http://files.rfvgoalsuccess.com/uploads/1/3/1/0/131070459/2074040.pdf
    • http://files.hopeberestored.org/uploads/1/3/2/6/132695347/pibumimur.pdf
    • http://files.clubedouroxtreme.com/uploads/1/3/2/7/132712333/fudejudadopijo.pdf
    • http://files.alissaellisphd.com/uploads/1/3/1/4/131452827/844207.pdf
    • http://files.bohemiansagegallery.com/uploads/1/3/1/1/131164047/9db39e68051.pdf
    • http://files.estateart.net/uploads/1/3/1/8/131871894/2acb06.pdf
    • http://files.italiancitizenshipconsultants.com/uploads/1/3/2/6/132681384/9214795.pdf
    • http://files.pinnaclehcbr.com/uploads/1/3/0/7/130776027/kalanidosudo-nawem-ruvifo.pdf
    • http://files.kerithallen.net/uploads/1/3/1/6/131636728/dewawabolefuse.pdf
    • http://files.theflourishsisterhood.com/uploads/1/3/1/3/131398156/95d18288fa830.pdf
    • https://modukadi.files.wordpress.com/2020/06/7382125265.pdf
    • https://kubujeraz.files.wordpress.com/2020/07/19228306236.pdf
    • https://nemopopa.files.wordpress.com/2020/06/88652901812.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/balevogigadan.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/98973723668.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/parisibudipaxetiwori.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29942388251.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.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_off00006636.bin
87fbc26f63029442696a307be5a79ab8e81641ed13d948a68ad47d07ff84dc2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6636 5008 bytes
font_01_sfnt_off00007738.bin
d5519d299f15efdf16e59923152bb42fda2be4ccdd7cd4b33b9b5ebb3f6baea6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7738 13964 bytes

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