Malicious PDF — malware analysis report

Static analysis result for SHA-256 de65c6d84111ede4…

MALICIOUS

PDF

67.8 KB Created: 2020-08-08 16:56:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f564ecd121ae0bea97354fcd9c1c01cc SHA-1: 72c104a1a667badcb8b084771830e4b3538612a6 SHA-256: de65c6d84111ede4d4a98995e357b682948b70036eca48213a5bd18199da0460
152 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common technique for distributing malware or phishing pages. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this, pointing to 'https://ttraff.cc/pify?keyword=apologetics+questions+and+answers+pdf'. The document body, though heavily obfuscated, contains text that appears to be a lure for downloading a PDF, further supporting the phishing or malicious redirection attack pattern. 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.cc/pify?keyword=apologetics+questions+and+answers+pdf
    • http://files.brunswickelections.com/uploads/1/3/0/7/130775786/015ed0463304f3.pdf
    • http://files.katherinekeanfineart.com/uploads/1/3/1/4/131407530/suzadol.pdf
    • http://files.malvoncollies.com/uploads/1/3/2/6/132681558/wolifufonizojem_xoruku_fimad.pdf
    • http://vufosonib.trudietrewin.com/uploads/1/3/1/4/131407005/fafozepuzufinanaxot.pdf
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/lufizewaneva.pdf
    • https://cdn.shopify.com/s/files/1/0433/4216/8218/files/78778542924.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/63912397784.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/voxabelilix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0522/2818/files/bojezoxoxas.pdf
    • https://cdn.shopify.com/s/files/1/0432/2567/7982/files/11579096492.pdf
    • https://cdn.shopify.com/s/files/1/0434/7668/0869/files/41720352625.pdf
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/febax.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/70556189295.pdf
    • https://cdn.shopify.com/s/files/1/0430/9745/6801/files/10425416259.pdf
    • https://cdn.shopify.com/s/files/1/0433/4937/7192/files/pioneer_deh_3400_ub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
    • https://cdn.shopify.com/s/files/1/0434/7651/7014/files/97650422809.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_off0000c803.bin
863db07f3df558e04affce40457fee78b58869cf7ab30f5ced4910e41abc9317		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC803 5528 bytes
font_01_sfnt_off0000daf2.bin
b6ddd70fcda16b0ce0b5b930d1669d5d7d039d348c25447cb2d44642e44f96d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF2 12104 bytes

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