Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1228758ccb793c0…

MALICIOUS

PDF

34.9 KB Created: 2020-08-14 22:57:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 101ca5dd28120cd94a759fa2ae0130ef SHA-1: b83a17d180aafcaf3a5e03b03924fb392d69e08a SHA-256: f1228758ccb793c06355cc773341fd1391d5e2a179bdf4164e928e9f6d0049aa
152 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large number of external PDF links, suggesting a link farm or SEO manipulation tactic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=background+for+easyworship+2009, which is likely used to redirect users to further malicious content. 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=background+for+easyworship+2009
    • http://files.christiestimber.com/uploads/1/3/2/3/132302815/a80bec9c772bc.pdf
    • http://files.markgordonglass.com/uploads/1/3/1/6/131636654/3013826.pdf
    • http://files.birthblissdoulacourses.co.uk/uploads/1/3/0/7/130775701/fugugiverosawamog.pdf
    • http://files.ywamalternatives.net/uploads/1/3/0/7/130776366/fevimejuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3880/files/apache_poi_example.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/6822622271.pdf
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/capital_letters_and_small_letters.pdf
    • https://cdn.shopify.com/s/files/1/0431/6354/9845/files/13812235611.pdf
    • https://cdn.shopify.com/s/files/1/0430/4814/0949/files/pomoxetilulovogop.pdf
    • https://cdn.shopify.com/s/files/1/0440/8446/1720/files/tejikifaxumilujojijidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/42525517952.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/gefipebuz.pdf
    • https://cdn.shopify.com/s/files/1/0430/4093/1991/files/lodow.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9535/files/diccionario_de_teologia_biblica_bauer.pdf
    • https://cdn.shopify.com/s/files/1/0432/9301/6222/files/91465076616.pdf
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/dafeta.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_off00004903.bin
75271d62982e86f8ee4e98a4677636d92095d476cca47730af12b1066baefa8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4903 6120 bytes
font_01_sfnt_off00005def.bin
0acbccea52e87d46774a45f62f8457cea42daa1679535a21a2c4276069d2b11c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DEF 9620 bytes

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