Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b968cc98aba2f23…

MALICIOUS

PDF

46.5 KB Created: 2020-08-23 10:17:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e1f4ccfa51052f927ffa77652c93b8e SHA-1: 755b40a1d84391f5287411dcf07c4ee663e2300d SHA-256: 2b968cc98aba2f23ae74170e7d72e83b13ebff29980cc1faf0eee08b5bb9b285
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links redirects to a known malicious redirector at ttraff.ru. This indicates the document is designed to lure users into clicking malicious links, likely for phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated.

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.ru/pify?keyword=journal+citation+reports+2018+impact+factor
    • http://rilewezob.christianprayerpower.org/uploads/1/3/1/8/131856543/xupobefexosudo.pdf
    • http://files.workbirding.com/uploads/1/3/2/6/132681033/7a0130b.pdf
    • https://cdn.shopify.com/s/files/1/0429/7146/3831/files/xarasixigetawulot.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fulefevizurosojasi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/24764303486.pdf
    • https://cdn.shopify.com/s/files/1/0434/0681/9493/files/56409911402.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/fusionner_des_en_un_seul_fichier.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7689/files/32419329993.pdf
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/36165478466.pdf
    • https://cdn.shopify.com/s/files/1/0434/0776/9750/files/53128199060.pdf
    • https://cdn.shopify.com/s/files/1/0444/1587/7287/files/african_proverbs_and_sayings.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/falemewajinufomulise.pdf
    • https://cdn.shopify.com/s/files/1/0446/1549/9939/files/virginia_woolf_a_room_of_one_s_own.pdf
    • https://cdn.shopify.com/s/files/1/0437/6422/0055/files/26346652912.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_off00007788.bin
749f7cd1a3d048b7ec6d396f15d28f0ba880509aeb7cbb5d0d281d756b6612ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7788 5672 bytes
font_01_sfnt_off00008abe.bin
fbc7013879292863cca392409da8b016f5654552e204ebeae38ca8101f105058		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABE 10040 bytes

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