Malicious PDF — malware analysis report

Static analysis result for SHA-256 17aa74297b7a6002…

MALICIOUS

PDF

42.0 KB Created: 2020-08-24 07:42:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c92f681ea4f42c2266ea695be48589ef SHA-1: 8a09721adb22185c6e0c4be61e6c3249f5e5db14 SHA-256: 17aa74297b7a60027ce25307630181bec6682c811ff5e624598a2ffa7fa9ef6c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating it's a redirector to malicious infrastructure. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=form+ar-+in+spanish'. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest an attempt to lure users to a malicious site, likely for phishing or malware distribution. The ML classifier also flagged this PDF with high confidence.

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.com/pify?keyword=form+ar-+in+spanish
    • http://jodap.schooneryacht.com/uploads/1/3/2/7/132740837/jegowiteted.pdf
    • http://files.ovcapatriots.com/uploads/1/3/0/8/130874317/2306336.pdf
    • http://pusukunu.hartmanholistic.com/uploads/1/3/1/1/131164520/birorelenofes.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0669/7367/files/jukezifabegezupomaju.pdf
    • https://cdn.shopify.com/s/files/1/0431/5974/8769/files/caribbean_pot_recipes.pdf
    • https://cdn.shopify.com/s/files/1/0435/7154/4225/files/87532266328.pdf
    • https://cdn.shopify.com/s/files/1/0438/0655/6320/files/bsc_computer_science_2nd_semester_question_papers.pdf
    • https://cdn.shopify.com/s/files/1/0432/4586/3067/files/6289383741.pdf
    • https://cdn.shopify.com/s/files/1/0429/2119/7724/files/68547210306.pdf
    • https://cdn.shopify.com/s/files/1/0430/0167/5939/files/modern_calligraphy_practice_sheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/7086/6087/files/3043073773.pdf
    • https://cdn.shopify.com/s/files/1/0430/2385/9873/files/jigoxitadulaburipumuru.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_off0000602c.bin
8cea28d97653639fb5d673a6c5ad12f10aba6ccd6b7f29d64256f3b33a3d95c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x602C 5012 bytes
font_01_sfnt_off00007109.bin
b437455fd53f37d6f56711b635abf64b2a4656d9c330c69afc4b54f975e0b20d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7109 13752 bytes