Malicious PDF — malware analysis report

Static analysis result for SHA-256 a149dbcc399d294d…

MALICIOUS

PDF

74.1 KB Created: 2020-08-23 21:59:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ee6a38d54f4ca5f75d11834ad6bd91e4 SHA-1: eefa2eaaa7972149c28f2786395bdd30a666ef4d SHA-256: a149dbcc399d294df22dc084ae319e42589eb0864473a5e12cefd01c52ec6989
152 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the string 'Bahadur full movie' and the malicious URL, suggesting a lure for potentially pirated content. The PDF_SEO_LINK_FARM heuristic also indicates the presence of numerous external links, likely for SEO manipulation or to host 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=bahadur+full+movie
    • http://files.ibstonecircle.co.uk/uploads/1/3/0/7/130776895/8591438.pdf
    • http://files.predictionservice.com/uploads/1/3/0/7/130738696/jutuwe-jukexukuvokeg.pdf
    • http://letulit.hootowllockets.com/uploads/1/3/2/6/132682076/nubas_jufivavudupe_suzovaredunam.pdf
    • http://files.hiebardesign.com/uploads/1/3/0/7/130775786/4cbec3186f883.pdf
    • http://bilis.foxxpoolsbycburger.com/uploads/1/3/0/7/130738902/kelafezijapigok.pdf
    • https://cdn.shopify.com/s/files/1/0437/3705/5393/files/rewaniru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5765/files/43285322503.pdf
    • https://cdn.shopify.com/s/files/1/0434/2625/0917/files/xepetavuxexa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kozaw.pdf
    • https://cdn.shopify.com/s/files/1/0429/2290/1663/files/photoshop_how_to_unlock_layer.pdf
    • https://cdn.shopify.com/s/files/1/0433/6245/1611/files/rugurepojitadelurud.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/jopamudobewus.pdf
    • https://cdn.shopify.com/s/files/1/0434/6504/8229/files/sapugexekojifoke.pdf
    • https://cdn.shopify.com/s/files/1/0428/9318/1095/files/talakaxedezagoti.pdf
    • https://cdn.shopify.com/s/files/1/0438/2146/5757/files/sobasosuwaziwug.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
stream_006_off0000d8ca.bin
6f4a48f725a69e72cc0c509b4ea954c72114da68a0f90f692419876becd895dc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD8CA 24948 bytes
font_00_sfnt_off0000a2f1.bin
b966ce8249bd366a5ff85c874421b6c96c2b0a734edc75eedb1e1fbc2da84e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2F1 5080 bytes
font_01_sfnt_off0000b41d.bin
4f8f36d091b217a8183c0b0ff3558058aa9cbaa0a2b775b0b3b3498b42ee02ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 11044 bytes
font_03_sfnt_off0001048b.bin
fb0269c33694095d85a084033649624a9c8df65c8b60ae1a5718d69ca9f34ff2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1048B 6412 bytes

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