Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf8388ec7708acd…

MALICIOUS

PDF

51.3 KB Created: 2020-08-12 18:42:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e32b70f8a20c3da7830609597586f221 SHA-1: 8c3b06dabf17dc05b1712fa627955bb11ea89840 SHA-256: fdf8388ec7708acda8d7034fa2d6483185470c09ba071cb413c7ff68b487be03
154 Risk Score

Malware Insights

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

The PDF document was flagged as malicious by a machine learning classifier and contains numerous external links, including a redirector to the known malicious domain 'ttraff.com'. This suggests the document is designed to redirect users to potentially harmful websites, possibly for phishing or malware distribution. No scripts were extracted from this sample, limiting the analysis of specific execution behaviors.

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.com/pify?keyword=functional+group+interconversion+organic+synthesis+pdf
    • http://wegej.retrozonearcade.com/uploads/1/3/1/0/131070450/8909428.pdf
    • http://files.theshoppeseahurst.com/uploads/1/3/1/3/131398184/ce4bd425332d.pdf
    • http://fomuwumo.amawalkerscamino.com/uploads/1/3/1/6/131606349/gugagudigarizi.pdf
    • http://files.keithbenderart.com/uploads/1/3/0/7/130740138/wejibavoxunazasege.pdf
    • http://files.nylosi.com/uploads/1/3/0/7/130739404/3812944.pdf
    • https://cdn.shopify.com/s/files/1/0431/8501/2900/files/biopsychology_10th_edition_pinel.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4659/files/63010100326.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/daxisota.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3481/files/kixovoxobotux.pdf
    • https://cdn.shopify.com/s/files/1/0432/2128/7080/files/16429919967.pdf
    • https://cdn.shopify.com/s/files/1/0434/4663/2615/files/2001_toyota_camry_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/kulipajapulujuda.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/26999269824.pdf
    • https://cdn.shopify.com/s/files/1/0439/7996/4574/files/40856840077.pdf
    • https://cdn.shopify.com/s/files/1/0434/3837/5074/files/menirubafakodomitidij.pdf
    • https://cdn.shopify.com/s/files/1/0431/3353/4357/files/quantitative_aptitude_exam.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_off00007caa.bin
00f2e0a319208bcac974a35c1889587616de732b5eae0000fb1850e5cde7da60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CAA 5416 bytes
font_01_sfnt_off00008f11.bin
3167f1506383a4a74441713ae444c753791f4b9a413f18d2f924df0f3c6c32e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F11 10500 bytes
font_02_sfnt_off0000b1e0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1E0 4324 bytes

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