Malicious PDF — malware analysis report

Static analysis result for SHA-256 95dbaa96f889c905…

MALICIOUS

PDF

44.2 KB Created: 2020-08-14 00:19:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d23d23237cb1536e4da7b1fd5a71c24 SHA-1: 07cfa415eebe23e511d98d4199357438c03f604e SHA-256: 95dbaa96f889c905417c0f3ac6bec590d7424225ca2342d0afd37442f9efa785
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a movie download, aiming to trick users into clicking it. The ML classifier strongly indicated maliciousness. The document body and embedded URLs suggest a lure for users seeking entertainment content, leading them to potentially harmful 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.ru/pify?keyword=anbe+sivam+full+movie+free++hd
    • http://wegudom.ourbaptistheritage.org/uploads/1/3/1/3/131379833/2885433.pdf
    • http://files.emateria.com/uploads/1/3/1/6/131606486/6180696.pdf
    • http://files.technadts.com/uploads/1/3/1/3/131383325/8074142.pdf
    • https://cdn.shopify.com/s/files/1/0427/5588/3175/files/risewazumisow.pdf
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/roman_catholic_lectionary_2020.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/tolkien_letters.pdf
    • https://cdn.shopify.com/s/files/1/0430/5456/3477/files/womexedubetabijo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0586/9208/files/60541806150.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/xomogizanazagajuxetog.pdf
    • https://cdn.shopify.com/s/files/1/0438/5121/9104/files/11405861966.pdf
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/biblia_ortodoxa_noul_testament.pdf
    • https://cdn.shopify.com/s/files/1/0430/9889/8592/files/46152047765.pdf
    • https://cdn.shopify.com/s/files/1/0430/9614/6073/files/31994603130.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006089.bin
4bdbf98f4b6ed008aabd7b8a401ceec7d630230521983a7111b347c385256b80
pdf-font-stream PDF embedded font (sfnt) at offset 0x6089 5140 bytes
font_01_sfnt_off000071c6.bin
ff58d37c1ebe17974817abf7a8c7ca8be8125635c7efd4a4ae3cd94afc337a95
pdf-font-stream PDF embedded font (sfnt) at offset 0x71C6 10676 bytes
font_02_sfnt_off0000961c.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x961C 4324 bytes