Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbcab7dc72b92b80…

MALICIOUS

PDF

35.8 KB Created: 2020-08-20 14:31:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f08dfdae6f6660b0e6d7fc2550fbf8d SHA-1: 8a435ba61b5ef45348f14d03e584744f2fffc692 SHA-256: cbcab7dc72b92b809d46a297a84f1018c0441c05acf60ce8f5747ee9bcc4c27c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially garbled, contains the URL 'https://ttraff.cc/pify?keyword=word+label+template+24+per+sheet', suggesting a lure to disguise malicious activity. Additionally, the file exhibits characteristics of a PDF link farm, embedding numerous external links, many of which point to benign Shopify domains, likely to improve search engine ranking for the malicious URL. 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=word+label+template+24+per+sheet
    • http://files.bluestonebabe.com/uploads/1/3/0/8/130874358/39eaaac.pdf
    • http://xitedivu.pollinatorsnativeplants.com/uploads/1/3/1/0/131070493/8496033.pdf
    • http://files.binge-writing.com/uploads/1/3/0/7/130738803/da222.pdf
    • http://files.mid-americathermalimaging.com/uploads/1/3/1/3/131382470/96cd972b1fbb9c.pdf
    • http://babit.customhomemechanics.com/uploads/1/3/1/6/131606069/80db24bb.pdf
    • https://cdn.shopify.com/s/files/1/0430/0341/2633/files/applicability_definition.pdf
    • https://cdn.shopify.com/s/files/1/0440/3416/2853/files/warning_signs_of_relapse_addiction.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/takudunivatexidoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/68828591653.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/74195332560.pdf
    • https://cdn.shopify.com/s/files/1/0433/2204/8667/files/jemefejagipaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/laxobegupatebanipiju.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/sewiripusevaramanemori.pdf
    • https://cdn.shopify.com/s/files/1/0434/3411/5233/files/najutoxavaziz.pdf
    • https://cdn.shopify.com/s/files/1/0440/7640/0792/files/gmat_official_score_report_sample.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_off00004933.bin
958c699cd92acaa792ddc136e4295addf1526a1471814f85bc428ad052849e31		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4933 5572 bytes
font_01_sfnt_off00005c16.bin
0f1e80a2a9cad1a4b73b5bcdebad35c41ef8db01235cb6681138bf343a77b2dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C16 12084 bytes

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