Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00807d8add53947…

MALICIOUS

PDF

58.3 KB Created: 2020-08-10 20:48:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a7a8176673c2d79d6037d7a69875977 SHA-1: 2e0dcbe978818abc160f090409f0f02ac3289d82 SHA-256: b00807d8add53947d221c19d3af690f3dedd62a0b6aed7cb6fc27cfbe8881899
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL and a list of other URLs hosted on Shopify and other domains, suggesting a link farm or distribution mechanism. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to harmful 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=antidiabetic+activity+of+medicinal+plants+pdf
    • http://files.demo.famhealth.com/uploads/1/3/1/6/131606984/tofin.pdf
    • http://sofewegu.1stmichiganartillery.com/uploads/1/3/0/8/130814328/93ae553689.pdf
    • http://files.tastytemptationsllc.com/uploads/1/3/0/8/130814475/gokazaj.pdf
    • http://files.helpmyvillagekids.org/uploads/1/3/2/6/132695862/xuwesazus-jibetisajivejat.pdf
    • https://cdn.shopify.com/s/files/1/0429/1375/9395/files/formulaire_cerfa_15186_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/3497/6157/files/59966137866.pdf
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/vegan_diet_plan.pdf
    • https://cdn.shopify.com/s/files/1/0427/7056/3239/files/10267173301.pdf
    • https://cdn.shopify.com/s/files/1/0434/2428/4824/files/xaluniperugo.pdf
    • https://cdn.shopify.com/s/files/1/0436/3337/7440/files/19647252946.pdf
    • https://cdn.shopify.com/s/files/1/0435/0718/7872/files/benefits_of_using_technology_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0428/9989/8531/files/star_fox_rom.pdf
    • https://cdn.shopify.com/s/files/1/0438/4620/5602/files/73442051173.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3615/files/20_percent_cooler.pdf
    • https://cdn.shopify.com/s/files/1/0448/0519/3885/files/boy_baby_names_hindu.pdf
    • https://cdn.shopify.com/s/files/1/0430/6976/7842/files/65566197239.pdf
    • https://cdn.shopify.com/s/files/1/0439/2511/0952/files/amarnath_yatra_2020_registration_form.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_off0000a259.bin
a216eaf464090dd49f88b65a53f9065daf6f95aca3d4746447199152fcff843d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA259 5496 bytes
font_01_sfnt_off0000b4ff.bin
284e35e5a3ca2c8d14aeafc0e944f78b078a19cdfd5e217d630e6f22323cefca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4FF 12084 bytes

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