Malicious PDF — malware analysis report

Static analysis result for SHA-256 7121869522fc0725…

MALICIOUS

PDF

44.7 KB Created: 2020-07-31 22:33:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de3be3025d2fbe9aa1c3a63e9e36e99e SHA-1: 38feb6729135032fb05367ac896da16983247abb SHA-256: 7121869522fc07250220bc1f28858339e0b77c91740fe45996bd8a94dd193a87
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links directs to a known malicious redirector, indicating a phishing or scam attempt. The document's structure and content suggest it is designed to trick users into clicking through a series of links, potentially leading to malware or further malicious sites.

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=git+ir+download
    • http://files.atthehealersnook.com/uploads/1/3/2/6/132683165/1457746.pdf
    • http://files.mstaylorgoestowashington.com/uploads/1/3/0/7/130740264/vetabuvijovujen.pdf
    • http://files.bateshetzel.com/uploads/1/3/0/9/130969663/fasazigebenu.pdf
    • http://files.hauntedfort.com/uploads/1/3/1/4/131453733/214323.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/7804/1244/files/tezubevid.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/nonikolubadafivopupovevem.pdf
    • https://cdn.shopify.com/s/files/1/0435/7108/5475/files/zivorofuwo.pdf
    • https://cdn.shopify.com/s/files/1/0436/8757/5705/files/35542262171.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/benafolelad.pdf
    • https://cdn.shopify.com/s/files/1/0434/5656/1318/files/tapupafuroradidofob.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tepumesuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/75165778433.pdf
    • https://cdn.shopify.com/s/files/1/0436/6571/9449/files/guziwow.pdf
    • https://cdn.shopify.com/s/files/1/0429/9302/5183/files/nesuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/tutumulu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7223/3376/files/gaxetatasonudebofefaluv.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9842/files/82947206345.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_off00005c80.bin
1ca9bb7b9d39cabcbcf2fffb52097202e0c62c91356b70e30550c554b568f822		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C80 5588 bytes
font_01_sfnt_off0000700c.bin
26e06fcd7e03424a5c0e7db28c8f85ace531bfb9f5b240c800a554c493d2e480		 pdf-font-stream PDF embedded font (sfnt) at offset 0x700C 4764 bytes
font_02_sfnt_off00008060.bin
9be5fcfbc8eb084b25148fb3eee18ab1bd90e62339607faf291fe4a7abf1492c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8060 11000 bytes

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