Malicious PDF — malware analysis report

Static analysis result for SHA-256 98d9708187391090…

MALICIOUS

PDF

41.9 KB Created: 2020-08-29 17:32:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63e5e777839268288c667c7d22822db6 SHA-1: 1e39baa41a2de288922423a0d529584b3b4041cb SHA-256: 98d9708187391090eb6b3bd9cd9f58c5ca4d8dd7b2f0d0ed31576f3c4891abca
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Tratado de dermatologia belda' and the malicious URL. The primary attack pattern involves luring users to the traff.com domain, which is flagged as a malicious redirector, likely to serve a malicious payload or conduct phishing.

Heuristics 3

  • 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.
  • 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.com/wix?keyword=tratado+de+dermatologia+belda
    • https://cdn.shopify.com/s/files/1/0428/1407/9143/files/98895710636.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tagesagebog.pdf
    • https://cdn.shopify.com/s/files/1/0433/9620/2652/files/basic_microbiology_techniques_4th_edition_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6564/7002/files/dibajepadibole.pdf
    • https://cdn.shopify.com/s/files/1/0431/1764/1879/files/20781613684.pdf
    • https://static.usrfiles.com/ugd/b8c837_7bcc34a0377846cb9b108c067d771ad2.pdf
    • https://static.usrfiles.com/ugd/b8c837_c92f4522ecec46d59c1ac33ac279b3f8.pdf
    • https://static.usrfiles.com/ugd/ea9bdf_20cdec03abab46cf9e5319c437bae2b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_6718665c2c244bb0a2cd4bbcf9101354.pdf
    • https://static.usrfiles.com/ugd/c3548c_0d217400a70448688dbc501970f11356.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9204ac282bf45bc993e2c3fc17378d7.pdf
    • https://cdn.shopify.com/s/files/1/0434/8972/2534/files/55697465285.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/reporter_newspaper_vacaville_ca.pdf
    • https://cdn.shopify.com/s/files/1/0439/4798/3006/files/mf_158_fiche_technique.pdf
    • https://cdn.shopify.com/s/files/1/0437/0844/8919/files/71856776684.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/95909873105.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_off000061f8.bin
f586bd70a7b989068d29289302b93e70406706eada916c12d40755385a4b1ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61F8 5056 bytes
font_01_sfnt_off0000730f.bin
554e74b290d0139aaee35657fb2eb58feb6211519f5bde33ddf7d7f016bb2d6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x730F 12700 bytes

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