Malicious PDF — malware analysis report

Static analysis result for SHA-256 357991ea588295d4…

MALICIOUS

PDF

48.8 KB Created: 2020-08-10 03:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c8ddcdec1d654ce504f4df8b00e1b0e SHA-1: b63ef116ead172ad887db973e116b5cd7130b67c SHA-256: 357991ea588295d4970a364513602877c77bda25c9b697222984e85785afe43e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for SEO link farms and redirecting users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.cc/pify?keyword=viva+vaia+augusto+de+campos+pdf'. The document body, though heavily obfuscated, also contains this URL, reinforcing the malicious intent. The presence of multiple shopify.com links suggests an attempt to blend in with legitimate content.

Heuristics 3

  • 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.
  • 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/pify?keyword=viva+vaia+augusto+de+campos+pdf
    • http://files.immortalinquiry.com/uploads/1/3/0/8/130813516/pebupo_rokiposefuta_wemax_pasegepimonel.pdf
    • http://kasade.downingcommunityadvisors.com/uploads/1/3/1/4/131454065/lurexej.pdf
    • http://files.lanchunghsuan.net/uploads/1/3/0/7/130776484/5aca11b4ae.pdf
    • http://files.zaaakart.com/uploads/1/3/1/4/131407102/wulobotoxiporud-minalamapere.pdf
    • http://tovir.purplecarrotmarket.coop/uploads/1/3/0/8/130814124/forediloziruse.pdf
    • https://cdn.shopify.com/s/files/1/0437/7539/3946/files/kaleshwaram_project_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/30277679191.pdf
    • https://cdn.shopify.com/s/files/1/0432/5782/3390/files/what_dns_am_i_using.pdf
    • https://cdn.shopify.com/s/files/1/0430/7976/2073/files/engineering_vibration_inman_4th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/likibejuserawumemivebuwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8312/9251/files/zatanatekavutivepawizek.pdf
    • https://cdn.shopify.com/s/files/1/0435/2347/3560/files/present_simple_vs_present_continuous_exercises_macmillan.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/risajolexokutudekonipuror.pdf
    • https://cdn.shopify.com/s/files/1/0433/5960/0798/files/96320199136.pdf
    • https://cdn.shopify.com/s/files/1/0434/3149/3784/files/ninosuralutiper.pdf
    • https://cdn.shopify.com/s/files/1/0431/4837/8280/files/83669426084.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_off00007e7d.bin
112478513b369258a152f703bcc0b4fe5e2f5e8d50dee50ee7dcb680fcde3976
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7D 5372 bytes
font_01_sfnt_off000090c9.bin
46b092d5638007d44f35a9f673e936ae636f26e09d7fc81036610e13c2dc0886
pdf-font-stream PDF embedded font (sfnt) at offset 0x90C9 10812 bytes