Malicious PDF — malware analysis report

Static analysis result for SHA-256 61249656e3bc53b2…

MALICIOUS

PDF

35.5 KB Created: 2020-08-09 23:22:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 89e7fb852a559a90b1cabac9bda4f81a SHA-1: b01e972e4403194476ecfeda74b1200fc86228b2 SHA-256: 61249656e3bc53b28aa3d7d3ecbff7bc692530c907dad40f16c3bb3accb545f3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a redirector. The primary malicious URL, https://ttraff.cc/pify?keyword=teoryang+bow+wow+pdf, is likely used to distribute further malicious content or lead users to phishing sites. 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=teoryang+bow+wow+pdf
    • http://vodeve.hallsvilleactivities.com/uploads/1/3/1/3/131380042/betidaz-lapisejariw.pdf
    • http://files.maxiandolikessler.com/uploads/1/3/1/3/131384721/zazoxa.pdf
    • http://files.lifelongnutrition.net/uploads/1/3/1/3/131378993/jajupusawijo.pdf
    • http://files.thedanceconnection.net/uploads/1/3/1/4/131437362/bcb6e3a052a8.pdf
    • http://files.auctionstories.net/uploads/1/3/1/6/131606325/perisizu_bozujade_totowifazejavi_ketulewafev.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7264/2454/files/catecismo_de_la_iglesia_catolica_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/sawujex.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/44015068443.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/muzumafude.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/migijesidonew.pdf
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/25691862592.pdf
    • https://cdn.shopify.com/s/files/1/0435/4578/8584/files/devosunekejasesoboramomim.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2053/files/turning_back_the_clock_umberto_eco.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/relunafasibokomolifevuliw.pdf
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/ios_8._2_beta_4.pdf
    • https://cdn.shopify.com/s/files/1/0433/6022/3397/files/captivated_by_you_sylvia_day_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/books_and_authors_2020_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0434/1851/7665/files/xifebojolef.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d2f.bin
3243f5f890c1b2f10b693de73a53c094ea36bc1bf51decd073137f37dcf9d1cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2F 5280 bytes
font_01_sfnt_off00005f4c.bin
ffe8d9081c3ce3dc3a222e41aa9d8409ee48ffc85dd2a278a8eebf8f3a708041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 9976 bytes

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