Malicious PDF — malware analysis report

Static analysis result for SHA-256 559bbba6418da18e…

MALICIOUS

PDF

51.1 KB Created: 2020-08-19 16:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 70b80cd317cc8021f20b69bfc0647c0c SHA-1: d5eac2f4f602f398d0c09d777dba4712de9491a2 SHA-256: 559bbba6418da18ed6e7d730506817f54997fd2e8439e0bb7b925188fae83279
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=marathi+calligraphy+style+font+free'. This indicates the document's primary purpose is to redirect the user to a malicious site. The presence of a large number of external PDF links, many pointing to benign Shopify URLs but also including several unknown domains, suggests a link farm or SEO poisoning tactic to obscure the malicious redirector. No scripts were extracted from this sample.

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=marathi+calligraphy+style+font+free
    • http://files.primrosetable.com/uploads/1/3/1/3/131383837/ed2ba.pdf
    • http://belexaj.trainwithpayne.net/uploads/1/3/1/4/131437079/096c5233494e20.pdf
    • http://files.bohobyjojo.com/uploads/1/3/0/7/130775221/xamoz.pdf
    • http://files.briggslambandmutton.com/uploads/1/3/2/6/132681245/rarilutejefif_tasepax_tobofizadomajog_muwuzunurinikig.pdf
    • http://gudivev.schulergemological.com/uploads/1/3/0/7/130739290/bajikupisomot.pdf
    • https://cdn.shopify.com/s/files/1/0448/4166/4669/files/announcement_box_terraria.pdf
    • https://cdn.shopify.com/s/files/1/0430/6590/1210/files/81703504582.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/bestwap_in_movie_2018.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/57468280698.pdf
    • https://cdn.shopify.com/s/files/1/0428/6224/8102/files/wemisizirepudobaz.pdf
    • https://cdn.shopify.com/s/files/1/0437/7103/5809/files/89829348735.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/668339115.pdf
    • https://cdn.shopify.com/s/files/1/0428/2135/3635/files/37168101229.pdf
    • https://cdn.shopify.com/s/files/1/0434/4964/7254/files/zusezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/dokenega.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/annexure_e-_1_form.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062b4.bin
446132f00be6aea21c3634fc6875699b68d88c68a9e99465ae1388b68f8e157c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B4 5172 bytes
font_01_sfnt_off00007441.bin
91a760555f33872592a422d9c8f72df1676cc69d0b9b9311b50c28d70a3aeadd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7441 5680 bytes
font_02_sfnt_off0000825d.bin
d14e5711c2eada535a8cb970f0ce60c24a68ccd3bc406368c7c50f79b06c3f4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825D 10632 bytes
font_03_sfnt_off0000a6a7.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6A7 4324 bytes
font_04_sfnt_off0000b4a7.bin
231e5937d9e43db6348a65a221a16448bc5321a73be8d5e0cc29f5d28580ee57		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB4A7 2324 bytes

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