Malicious PDF — malware analysis report

Static analysis result for SHA-256 5931b071104a6db0…

MALICIOUS

PDF

39.3 KB Created: 2020-08-26 09:58:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c166bf833b649a2968da2120bc3e06e SHA-1: 4b3db7ab760720c4b2ddad4c07333a4898898365 SHA-256: 5931b071104a6db031c791c424aad4cd2e6c35aab2a03afef331b570405761bd
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK directly points to the malicious infrastructure at https://ttraff.cc/pify. The document body, though heavily obfuscated, contains the same redirector URL and a URL pointing to a PDF hosted on Shopify, suggesting a lure to download further content or redirect to a malicious site. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely for SEO manipulation or to host further malicious content.

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.cc/pify?keyword=introduction+to+psychology+plotnik+1
    • http://files.schiltec.com.au/uploads/1/3/1/3/131384335/1961710.pdf
    • http://kibax.greenentree.com/uploads/1/3/0/8/130873995/5877727.pdf
    • https://cdn.shopify.com/s/files/1/0430/7802/5377/files/xikixotegedajebofipix.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/ca_course_details.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/22848292824.pdf
    • https://cdn.shopify.com/s/files/1/0440/8786/9592/files/vifave.pdf
    • https://cdn.shopify.com/s/files/1/0436/1325/7885/files/73414509091.pdf
    • https://cdn.shopify.com/s/files/1/0429/6297/6921/files/26844598926.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/81016151356.pdf
    • https://cdn.shopify.com/s/files/1/0436/1610/8707/files/event_satisfaction_survey_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/2723/3954/files/autobus_marbella_malaga_aeropuerto.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/52874976686.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_off00005a0f.bin
636bb3fe9c951576d0a108cf1c90cd79b48d8d22b8e01e22cbdfb07969bf607b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0F 5280 bytes
font_01_sfnt_off00006c09.bin
df371173d07bdb99236a2002dcd430a599086495389bfd8f87a0600a02607d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C09 10712 bytes

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