Malicious PDF — malware analysis report

Static analysis result for SHA-256 830ad82e3489de45…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 07:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a837cb1cc423455f2dd05b090003c75 SHA-1: f2ac0f41c031931c0ef0fe67cdc6607415b8398b SHA-256: 830ad82e3489de456100b749584b3518d16be791fec3bf65ea01f66ee43b1cbe
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=states+of+matter+simulation+lab+answer+key'. This URL is presented within the document body, disguised as an answer key. The PDF also exhibits characteristics of a link farm, with numerous external links, many pointing to Shopify domains, but one suspicious link to 'http://zuwuwuso.spartafbo.com/uploads/1/3/1/4/131438161/gopugevazu-fevabavodibojon-fojosusera.pdf'. The primary malicious link likely serves as a lure to a phishing or malware distribution site.

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=states+of+matter+simulation+lab+answer+key
    • http://zuwuwuso.spartafbo.com/uploads/1/3/1/4/131438161/gopugevazu-fevabavodibojon-fojosusera.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/roxafudowetarapen.pdf
    • https://cdn.shopify.com/s/files/1/0433/9977/4364/files/quimica_fisica_peter_atkins.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/46934495667.pdf
    • https://cdn.shopify.com/s/files/1/0435/4169/2570/files/jifokikizal.pdf
    • https://cdn.shopify.com/s/files/1/0429/1143/2857/files/nurenowebogaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/49739238830.pdf
    • https://cdn.shopify.com/s/files/1/0437/8276/6743/files/warhammer_almanach_mistrza_gry.pdf
    • https://cdn.shopify.com/s/files/1/0433/7706/6135/files/xunifotalivu.pdf
    • https://cdn.shopify.com/s/files/1/0437/4007/0042/files/berlitz_essential_spanish.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3219/files/sisadapogilipona.pdf
    • https://cdn.shopify.com/s/files/1/0452/4012/3552/files/13094046225.pdf
    • https://cdn.shopify.com/s/files/1/0435/8173/5073/files/chiku_buku_raile_song_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8652/0224/files/toludavozufuv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5489/0149/files/bubotufibabixurowenamok.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000053fc.bin
d20f1b6486c93cedaaa9c9b95cbdd3ee147d693d593e7ccd43a71102d2bfc98f
pdf-font-stream PDF embedded font (sfnt) at offset 0x53FC 5296 bytes
font_01_sfnt_off000065f0.bin
66b535618c8ffd88ef40cfa7ddb58f04a886bb980839cc89dd14a020da9c51c0
pdf-font-stream PDF embedded font (sfnt) at offset 0x65F0 9936 bytes
font_02_sfnt_off000087f3.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x87F3 4324 bytes