Malicious PDF — malware analysis report

Static analysis result for SHA-256 67083f020f80b66d…

MALICIOUS

PDF

43.2 KB Created: 2020-08-04 21:01:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f8d8fe1c23b4063b02a8b14dc8dc3b38 SHA-1: 81536b7efdc5b954b1bc915cbf41617a64161a02 SHA-256: 67083f020f80b66d1fe4e99b480d46a45f510b9b391379e133980dac11607827
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm designed to redirect users to potentially malicious content. One such link, https://ttraff.ru/pify?keyword=capitalismo+mercantil+pdf, is flagged as a malicious redirector. The document body itself is heavily obfuscated but contains references to the malicious URL and numerous other URLs hosted on Shopify, suggesting a coordinated effort to drive traffic to malicious infrastructure.

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=capitalismo+mercantil+pdf
    • http://files.cloudvalleycashmere.com/uploads/1/3/1/4/131406785/9495024.pdf
    • http://files.motivationbymaia.com/uploads/1/3/2/6/132695405/31d9e66e71c1.pdf
    • http://files.uturncapital.org/uploads/1/3/1/3/131398374/b1e7607b093c.pdf
    • http://dajotatup.bigdogsgraphics.com/uploads/1/3/1/4/131408738/vojizonuwekasuvaw.pdf
    • http://files.craftylifestyle.co.uk/uploads/1/3/2/6/132681145/4402319.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/6839/1577/files/naruto_shippuden_english_dubbed.pdf
    • https://cdn.shopify.com/s/files/1/0433/4950/8250/files/fuwowezegin.pdf
    • https://cdn.shopify.com/s/files/1/0431/0574/7095/files/marsden_tromba_vector_calculus.pdf
    • https://cdn.shopify.com/s/files/1/0436/3137/8592/files/75826223630.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/zezepolukotexu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/89511596137.pdf
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/jalunowabobedoxanibaso.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/59538208420.pdf
    • https://cdn.shopify.com/s/files/1/0431/5319/5162/files/dudekajifafinumigovalana.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/voriwatovetizejewadodo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46150969179.pdf
    • https://cdn.shopify.com/s/files/1/0431/5047/5413/files/31361685703.pdf
    • https://cdn.shopify.com/s/files/1/0437/6798/8376/files/jejuzedumoxiwude.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_off00006bf5.bin
7a0163fcb71f062549801841a85dbcc04fad1f3ac1b07da467222fcf4b3ebba0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF5 5208 bytes
font_01_sfnt_off00007d8b.bin
2f0bb77cb28257a62c7917d0b22af3ea53dbc966b0e5f46e0ed00d771e54b68b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D8B 9992 bytes

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