Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b3be75406d4135…

MALICIOUS

PDF

44.9 KB Created: 2020-07-30 12:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c2f0927a68ffd6af011c5db83369e79 SHA-1: 9824867e5faff7ae7575bb7a6f49c25d9da38b90 SHA-256: 44b3be75406d4135314375dd82c6a8c9a7c7349ae4385a32cc744c95d520edcc
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a redirector service (ttraff.cc) identified as malicious. The document body, though heavily obfuscated, suggests a lure related to 'Openstack command line interface reference pdf'. The presence of a malicious redirector link indicates an attempt to direct the user to a harmful destination, likely for phishing or malware delivery.

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=openstack+command+line+interface+reference+pdf
    • http://files.tumblenasium.com/uploads/1/3/1/4/131453086/dulugunonononimibo.pdf
    • http://files.yogaandwork.com/uploads/1/3/1/3/131383604/8d2eb9e60b93.pdf
    • http://files.thecroakingfrog.com/uploads/1/3/0/7/130776864/vulonamom.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7349/files/19772325331.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/20064912546.pdf
    • https://cdn.shopify.com/s/files/1/0427/9776/0668/files/78695806102.pdf
    • https://cdn.shopify.com/s/files/1/0430/7088/1946/files/miwebotego.pdf
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/90758366961.pdf
    • https://cdn.shopify.com/s/files/1/0432/7541/9812/files/kekukuzolexelepovufotena.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/nupoxuna.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75609531209.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/60229528165.pdf
    • https://cdn.shopify.com/s/files/1/0430/8231/7975/files/95790265371.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4885/files/15396871559.pdf
    • https://cdn.shopify.com/s/files/1/0432/5546/4104/files/xofufudovujodidese.pdf
    • https://cdn.shopify.com/s/files/1/0432/5870/8136/files/29150443258.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/
    • https://cdn.shopify.com/s/files/1/0432/6745/7188/files/9

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065a0.bin
e695c8627960a8f207d0d60e0b992733c87e2f42beb9824c6a7e63ca0389d084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 5180 bytes
font_01_sfnt_off0000771d.bin
aee1777c8d047d031889a5bc87ce104707858f0154e4edab1fa9ae6383072109		 pdf-font-stream PDF embedded font (sfnt) at offset 0x771D 14360 bytes

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