Malicious PDF — malware analysis report

Static analysis result for SHA-256 f600ea4ef8da1b43…

MALICIOUS

PDF

51.5 KB Created: 2020-08-01 09:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: eaad0110c6d50b6bbd8954a0d320519c SHA-1: bfe25072162bf1eeb3243949f0a51a8b12e36746 SHA-256: f600ea4ef8da1b43c4e01915a24519cb938f3f4dfe658b07764b576747719292
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.cc'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com' and other domains, likely intended to manipulate search engine results or distribute 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=1986+honda+rebel+250
    • http://files.cobramcleaningservice.com/uploads/1/3/1/3/131398406/1c7df.pdf
    • http://files.tonyottenauthor.com/uploads/1/3/0/7/130775666/tazim.pdf
    • http://files.belongingcatholicconference4women.com/uploads/1/3/1/3/131382274/1261747.pdf
    • http://files.addisontreeremovalmemphis.com/uploads/1/3/2/6/132680813/pijidopetatasu_lagexoso_dumozobuvur.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5205/files/31073390109.pdf
    • https://cdn.shopify.com/s/files/1/0432/6565/4939/files/28102420873.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54440827626.pdf
    • https://cdn.shopify.com/s/files/1/0432/2312/2077/files/12501998260.pdf
    • https://cdn.shopify.com/s/files/1/0429/3551/7337/files/nibibegado.pdf
    • https://cdn.shopify.com/s/files/1/0428/4717/4812/files/98627552120.pdf
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/60583439202.pdf
    • https://cdn.shopify.com/s/files/1/0431/5018/0514/files/lefubevimipu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0392/6952/files/75710794665.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/zesibolepo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0396/9689/files/wonixidinupofu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3863/7208/files/lovukizobijuwowaxe.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
font_00_sfnt_off00006683.bin
59fed0694d314d13c366e3792f8f91e702c91440a73b08ab64777d0c4ef039db		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6683 5396 bytes
font_01_sfnt_off000078a8.bin
e02166ae841b5325977325f2a810ebecb8453f276f4c53105e88f0830d293649		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78A8 11116 bytes
font_02_sfnt_off00009dc9.bin
84d5bd19c210eb3b73ecc14096ab1e56fdfb5b80ce7ba4f0052c67c0c2b02727		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DC9 16060 bytes
font_03_sfnt_off0000b25c.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB25C 4324 bytes

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