Malicious PDF — malware analysis report

Static analysis result for SHA-256 5845f8a09b79779f…

MALICIOUS

PDF

49.5 KB Created: 2020-08-14 22:50:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0dd0267fe724845306347a6d0c57e511 SHA-1: e8b028271cc03737e38fffd7e9b24917d2435f02 SHA-256: 5845f8a09b79779fbcd2cb1ab2149a3bd785b27541997e52b2a7631699730cd3
152 Risk Score

Malware Insights

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

The PDF contains a prominent link that masquerades as a movie download, directing users to a redirector URL. This redirector is associated with known malicious infrastructure, indicating a phishing or social engineering attempt. The document body and embedded links are designed to entice clicks, leading to further malicious content.

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=avengers+2019+full+movie+in+tamil
    • http://files.akomaarts.org/uploads/1/3/0/7/130739776/44661e9.pdf
    • http://files.frenchlakebutchershop.com/uploads/1/3/1/4/131438188/0cd65dd05ad5b.pdf
    • http://files.kaelynskloset.com/uploads/1/3/0/7/130775245/bojamaxafaxab_sugudo_xiwofububodep_fonanenazegedu.pdf
    • http://files.rangerbaptistchurch.org/uploads/1/3/1/8/131871633/386054.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/dugekejem.pdf
    • https://cdn.shopify.com/s/files/1/0436/4930/2693/files/trastornos_psicologicos_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7457/files/movegebasop.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4440/files/calculus_mathematics_book.pdf
    • https://cdn.shopify.com/s/files/1/0433/3384/5150/files/22247666864.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/up_all_night_songs.pdf
    • https://cdn.shopify.com/s/files/1/0430/7963/1012/files/xaruvabawiperifot.pdf
    • https://cdn.shopify.com/s/files/1/0433/1667/4713/files/59753192376.pdf
    • https://cdn.shopify.com/s/files/1/0429/5481/7690/files/saxuxerevewovonat.pdf
    • https://cdn.shopify.com/s/files/1/0433/2742/2632/files/zopudojexiwa.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/tesezeribevomeduzewuru.pdf
    • https://cdn.shopify.com/s/files/1/0434/8307/0630/files/60659772599.pdf
    • https://cdn.shopify.com/s/files/1/0439/0980/8280/files/79067945794.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b6e.bin
878df231d1e99c6aa4147aee5b87d0315c44102c0158cd442ba304e88ad56076		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6E 5620 bytes
font_01_sfnt_off00007e7c.bin
0d8e3298a99daa54a3d615fd253436080794986edce50ceeca34d69d802fde53		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7C 3168 bytes
font_02_sfnt_off00008b2f.bin
19d579821e83c32cd478aefcb57f849508ece8625c42f2108810477b29a00d2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 1936 bytes
font_03_sfnt_off00009475.bin
92675a39f17992ab5b8c82ffd1c8ba52dc714adc255d63ad3cba34cfa2882317		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9475 10460 bytes

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