Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fb2b259b2aba3d1…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 04:46:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2afbe734994b5920f98739ad202fdd65 SHA-1: a03f61f4553eb1094b756c622d22fb6b045358fb SHA-256: 5fb2b259b2aba3d1c6e7a766223d102531dc5f7971295ee4a3f6ccf165570bc8
154 Risk Score

Malware Insights

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

The PDF document contains a lure related to 'Formato certificado de origen mexico estados unidos' and embeds multiple links. One of these links, 'https://ttraff.cc/pify?keyword=formato+certificado+de+origen+mexico+estados+unidos', points to known malicious redirector infrastructure. The document's structure and embedded links suggest it is designed to lead users to malicious sites, likely for phishing or malware distribution.

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/pify?keyword=formato+certificado+de+origen+mexico+estados+unidos
    • http://files.dowdystaxidermy.com/uploads/1/3/0/7/130740298/mowupugugomijib.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0437/9312/1442/files/jumibakowezix.pdf
    • https://cdn.shopify.com/s/files/1/0432/6755/5481/files/2551131230.pdf
    • https://cdn.shopify.com/s/files/1/0439/1125/0075/files/nigukepexake.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/tujanowuteza.pdf
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/sawogilopuxezo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2097/4242/files/37570473282.pdf
    • https://cdn.shopify.com/s/files/1/0459/7042/3968/files/manual_chevrolet_aveo_sedan_2005.pdf
    • https://cdn.shopify.com/s/files/1/0434/6262/3394/files/63069011643.pdf
    • https://cdn.shopify.com/s/files/1/0440/4926/8886/files/vomamasezijafixupuwifer.pdf
    • https://cdn.shopify.com/s/files/1/0435/2249/0532/files/tarixubitojufif.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063db.bin
6853f2d608adac9852d6c4b82c503b9c63d83325cdc51336e95fc0f6a4fc7c26
pdf-font-stream PDF embedded font (sfnt) at offset 0x63DB 5332 bytes
font_01_sfnt_off000075de.bin
46e166e31ef9cb48a3e1d3d026bb4ccc80b32ca948f3414fd2576cbc621802f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 4440 bytes
font_02_sfnt_off000081c5.bin
5b8dcec25d3136f5ceed7326225022f2e724c26cd30bb3a9e8ce6ed5540da025
pdf-font-stream PDF embedded font (sfnt) at offset 0x81C5 11184 bytes