Malicious PDF — malware analysis report

Static analysis result for SHA-256 522e949f6a633873…

MALICIOUS

PDF

32.4 KB Created: 2020-08-01 00:47:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 142b039ced82eb3bf388c024fb510efd SHA-1: f9e37c4042bceaf884ff7f78743f3ec57980dbd6 SHA-256: 522e949f6a63387390ecdcd69c7d593f248a7166867f845aa58d1bf9fa7b7663
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is https://ttraff.ru/pify?keyword=iptv+stalker-+rip, which is designed to lure users into clicking on further links. The document body, though heavily obfuscated, also contains this URL and other PDF links, indicating a deliberate attempt to create a link farm for malicious redirection.

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=iptv+stalker-+rip
    • http://files.michaeldeaton.com/uploads/1/3/1/4/131437402/tadizedus-kadanoxoxerok-doxibu-zenaviruxopi.pdf
    • http://files.victorjoelortiz.com/uploads/1/3/0/7/130775515/9e7344a48.pdf
    • http://files.headrushtv.com/uploads/1/3/0/7/130776590/xazunejopipit-xelive-javubugib.pdf
    • https://cdn.shopify.com/s/files/1/0433/7650/9080/files/926604791.pdf
    • https://cdn.shopify.com/s/files/1/0434/8795/3053/files/litudesogerakeretawidij.pdf
    • https://cdn.shopify.com/s/files/1/0429/4184/1575/files/83770869502.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/64260519361.pdf
    • https://cdn.shopify.com/s/files/1/0440/8147/9832/files/sumovimogo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3582/0185/files/tuzigi.pdf
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/mugipanefefitonojerexe.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/regodutitojerolaganuful.pdf
    • https://cdn.shopify.com/s/files/1/0430/3912/9751/files/87388889707.pdf
    • https://cdn.shopify.com/s/files/1/0430/9581/8404/files/29201780010.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6453/files/vamuretidito.pdf
    • https://cdn.shopify.com/s/files/1/0439/1718/1083/files/mupajobupowolexube.pdf
    • https://cdn.shopify.com/s/files/1/0436/8351/2473/files/40714229722.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_off000043f9.bin
890cae9dd41ea0eea70f3acb9702b6dfb02c7883be50ccc00f8fc3425001026b
pdf-font-stream PDF embedded font (sfnt) at offset 0x43F9 4908 bytes
font_01_sfnt_off000054c2.bin
67d529f59767add3199744795de3634dc2ab1dba1c27460bf8616c407bd6dc2b
pdf-font-stream PDF embedded font (sfnt) at offset 0x54C2 9436 bytes