Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b71b0c1a11cd88…

MALICIOUS

PDF

51.9 KB Created: 2020-08-10 03:53:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88c8892b362981d34bd7bf5b7b1fba0e SHA-1: 93f80b64d4a0b1cea0dfa504b8adf0dab9ba7c37 SHA-256: 80b71b0c1a11cd884bcac89bc82848d6699deed1df1464e03898829fbdf54176
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one heuristic specifically identifying a malicious redirector link. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=major+areas+of+philosophy+pdf', suggesting a lure to a malicious site. The presence of a link farm further indicates an attempt to distribute malicious content or traffic.

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=major+areas+of+philosophy+pdf
    • http://mobasa.thesharedagenda.org/uploads/1/3/1/3/131383483/3217662.pdf
    • http://files.arizonarentalsonline.com/uploads/1/3/2/6/132682862/9e15de5fe551.pdf
    • http://files.gcwomensclub.com/uploads/1/3/2/6/132682063/wibeveti-fuvasopu-rinefajifuwezo-rirujarid.pdf
    • http://files.carinandbenblazer.com/uploads/1/3/2/6/132683000/masejolonijo.pdf
    • http://files.caribbeandawn.com/uploads/1/3/1/0/131070035/1836999.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/befovajigetesuwalukip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86662201832.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/59783037483.pdf
    • https://cdn.shopify.com/s/files/1/0435/0276/4184/files/35439682901.pdf
    • https://cdn.shopify.com/s/files/1/0431/7170/9079/files/jawesodexemudefatejul.pdf
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/crayola_calligraphy_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/2663/5162/files/nutricion_parenteral_en_neonatos_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/5816/5925/files/blessed_drake_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37237973095.pdf
    • https://cdn.shopify.com/s/files/1/0430/4073/5381/files/lexomomef.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/university_of_cape_town_prospectus_2020.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_off00008a61.bin
e83ce417621ea74383559f6a68192f7944216eddbcb4e399d51a279e73b31fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A61 5312 bytes
font_01_sfnt_off00009c86.bin
3aabd941b3f2aff0b38068c7850e3be8044b75a1265e4bd6bb594a88ca1b19d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C86 11344 bytes

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