Malicious PDF — malware analysis report

Static analysis result for SHA-256 5074c48524fc0be9…

MALICIOUS

PDF

48.3 KB Created: 2020-08-04 17:26:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7dde1d2a40d2e07f05a8987a4d774801 SHA-1: 493db803707aa6f29be8dedb16f0d24f34f3109b SHA-256: 5074c48524fc0be96182c26e53bb3095d0c6bf9546aa489dbe0b9d722f3d9f9e
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, a common tactic for redirecting users to malicious sites. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'anti arthritic activity pdf' and the URL 'https://ttraff.cc/pify?keyword=anti+arthritic+activity+pdf', suggesting a lure to disguise the malicious intent. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, further supporting the malicious redirection pattern.

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=anti+arthritic+activity+pdf
    • http://files.ishairimmer.com/uploads/1/3/0/7/130776567/guruladilorizopese.pdf
    • http://files.oldtel.com/uploads/1/3/0/7/130740530/a335356e3966e71.pdf
    • http://files.bamboobabyboutique.com/uploads/1/3/2/6/132696194/3262343.pdf
    • http://files.preciouspurebredpupz.com/uploads/1/3/2/7/132740408/f2b76.pdf
    • http://kekale.parashantiyoga.com/uploads/1/3/1/8/131856372/xevutusagubuvaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/86568844595.pdf
    • https://cdn.shopify.com/s/files/1/0432/3947/3314/files/nitro_cracked.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0309/files/44411043916.pdf
    • https://cdn.shopify.com/s/files/1/0435/8907/5102/files/miwudevosolopan.pdf
    • https://cdn.shopify.com/s/files/1/0433/3636/8283/files/podemajazim.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/46193054365.pdf
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/91899443391.pdf
    • https://cdn.shopify.com/s/files/1/0432/6853/8521/files/vakebog.pdf
    • https://cdn.shopify.com/s/files/1/0439/1321/6168/files/gta_5_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/1024/4256/files/gumikugorakedewok.pdf
    • https://cdn.shopify.com/s/files/1/0431/0063/5290/files/najigufoxatevabozidulefu.pdf
    • https://cdn.shopify.com/s/files/1/0428/0408/4899/files/nisefutumetifovobod.pdf
    • https://cdn.shopify.com/s/files/1/0430/5007/4269/files/vubimonabor.pdf
    • https://cdn.shopify.com/s/files/1/0437/6972/5085/files/wojapojunimur.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_off00006b50.bin
488267191366d602c2550f5b0ef2805e0c0433e9a9196fd56c7405d89ab54323
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B50 4744 bytes
font_01_sfnt_off00007b63.bin
69de461984846cf568f404985ca0467067fe892217d462c09276d7b89f8631b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B63 13200 bytes
font_02_sfnt_off0000a5b3.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B3 4324 bytes