Malicious PDF — malware analysis report

Static analysis result for SHA-256 574981bfecad1e48…

MALICIOUS

PDF

52.3 KB Created: 2020-08-02 15:26:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10560107e4458e7dbae5baa759a76cca SHA-1: b0e83ae8270a0f19b466626014fc9620f7796bc0 SHA-256: 574981bfecad1e48559184271768a02048ffa9c78149e40011e2a2cdb54ce76f
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 "Turbo fire meal plan pdf". The primary malicious URL, https://ttraff.ru/pify?keyword=turbo+fire+meal+plan+pdf, is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the lure and the malicious URL, reinforcing the social engineering aspect. The ML classifier also strongly indicated maliciousness.

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=turbo+fire+meal+plan+pdf
    • http://files.pdxccc.com/uploads/1/3/1/4/131408017/9337739.pdf
    • http://files.churchofbeethoven-oakpark.com/uploads/1/3/1/8/131856877/xitapusabeno.pdf
    • http://files.bombdudecomics.com/uploads/1/3/1/4/131453022/jixurozebibatu.pdf
    • http://files.utartstudentgallery.org/uploads/1/3/1/1/131164479/vokewuga_kofogijiwa_lawoburan_monida.pdf
    • http://files.sherieunfiltered.com/uploads/1/3/2/8/132815961/a59b4b501cc8.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/5021/3274/files/21006098888.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5711/files/61627622815.pdf
    • https://cdn.shopify.com/s/files/1/0432/6667/0745/files/48789723516.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/konodonagufimomoweres.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/xawanewakilapi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/gigozapex.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/dazuwenaronigadad.pdf
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/30906496459.pdf
    • https://cdn.shopify.com/s/files/1/0436/9481/7445/files/98898771802.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/38051333430.pdf
    • https://cdn.shopify.com/s/files/1/0438/4702/4805/files/wofimimusutidaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/7548/5348/files/lujalosapu.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_off000078db.bin
b236660939fdd26468b6a187ad49b80dfdc97e2cc1d8418a37a0b402f53604f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78DB 5100 bytes
font_01_sfnt_off00008a13.bin
aab235952a093b957be9662a7bc9f25a0d5eae076dabf25c1fe3fe9a14d5a61c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A13 10508 bytes
font_02_sfnt_off0000ae33.bin
aad9bc0f36eadc3314e08670b59090120051e308b357201f134af3d0b781b2b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE33 16312 bytes

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