Malicious PDF — malware analysis report

Static analysis result for SHA-256 56f3146a4d089fab…

MALICIOUS

PDF

57.9 KB Created: 2020-08-21 08:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 053abe6e7db29af57a229deff729edf7 SHA-1: 25eff4d80f1f3b8744988e1e19033cc41141643c SHA-256: 56f3146a4d089fabb2f242d64394df3e82157e5ef3b673d3452c8cc3f872bfb3
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text referencing a font download and includes the primary malicious URL. This suggests a phishing or social engineering attack aiming to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=sosa+arabic+font+for+autocad+free
    • http://lijobix.bostonshoestoboots.com/uploads/1/3/1/1/131164250/mexegejo.pdf
    • http://files.timwperkins.com/uploads/1/3/0/9/130969190/3571264.pdf
    • http://files.cwwdelta.com/uploads/1/3/2/7/132740637/9e0bd.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/noketivu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8376/7713/files/85553027517.pdf
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/sejagoxikukevotu.pdf
    • https://cdn.shopify.com/s/files/1/0436/8711/6965/files/grant_cardone_closes.pdf
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/penawuba.pdf
    • https://cdn.shopify.com/s/files/1/0436/5297/2697/files/gofemasat.pdf
    • https://cdn.shopify.com/s/files/1/0434/8379/1526/files/wuzuxiwewi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5259/6374/files/dadina.pdf
    • https://cdn.shopify.com/s/files/1/0452/1210/6912/files/synonyms_worksheets_for_grade_5.pdf
    • https://cdn.shopify.com/s/files/1/0435/4378/9727/files/codycross_answers_group_198_puzzle_4.pdf
    • https://cdn.shopify.com/s/files/1/0438/5207/1074/files/baskin_robbins_job_application_canada.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000ae05.bin
7dc711b2a1920652f84b564b1fa6103a2c62714d0d8cb24bfba9de4c7c548a59		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAE05 25356 bytes
font_00_sfnt_off00006d0c.bin
5da219d7e4e97243fa6bdf01187201dd02c0967cb6d9661fe98f88849d5d41c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D0C 5224 bytes
font_01_sfnt_off00007ed1.bin
d6466d25a994674ec059504c51b13e9d2f4fdb136fa07c8087ccc64779a3178d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED1 14956 bytes

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