Malicious PDF — malware analysis report

Static analysis result for SHA-256 234f676a410fe265…

MALICIOUS

PDF

41.4 KB Created: 2020-08-08 01:33:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f498a481ade46caf7bbe857672a04b4 SHA-1: 8042ba07627ff507e6e8ac31accc1d11a99d1870 SHA-256: 234f676a410fe26596e76f8153430e8daa4632b6f40edab4c6c0b9542f24987b
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though partially garbled, includes the phrase 'Affairs cloud banking awareness pdf download', suggesting a social engineering lure. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify, likely to obscure the malicious destination. The presence of a download button lure further supports a phishing or redirection attempt.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=affairs+cloud+banking+awareness+pdf+download
    • http://files.thewaveinspired.com/uploads/1/3/2/6/132695543/f0f118e88a447bb.pdf
    • http://files.artworkbyjenn.com/uploads/1/3/1/3/131384286/rimebowalira_zewujuv_fofokur.pdf
    • http://files.broadwayboundmtc.com/uploads/1/3/1/8/131871614/tudunivokekop_nexizepijiwuxul_takewemun.pdf
    • http://files.rpeake.com/uploads/1/3/0/8/130874101/tuwogupu-domureguv.pdf
    • http://files.fencerowfinds.com/uploads/1/3/0/7/130775633/4698ff6c79.pdf
    • https://cdn.shopify.com/s/files/1/0429/1022/0447/files/57264984909.pdf
    • https://cdn.shopify.com/s/files/1/0437/6877/4814/files/sutusadubikapijujenive.pdf
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/zemewegitudiguregisuju.pdf
    • https://cdn.shopify.com/s/files/1/0432/2649/7182/files/23905928831.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/47197060188.pdf
    • https://cdn.shopify.com/s/files/1/0435/7708/2017/files/criticism_of_utilitarianism.pdf
    • https://cdn.shopify.com/s/files/1/0433/5606/1850/files/83368618411.pdf
    • https://cdn.shopify.com/s/files/1/0432/8279/2606/files/physics_equation_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0429/0271/6572/files/space_encyclopedia_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4371/5222/files/98319822926.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_off00006262.bin
ab55d91749a8decc4b3921ed33fee79ee9c58bd9d18345470a2281bbbd8f9cd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6262 5608 bytes
font_01_sfnt_off00007594.bin
931c4da484371174b4c67fbc5ff0be166a1cb91043537fdd4e160acf1077c205
pdf-font-stream PDF embedded font (sfnt) at offset 0x7594 10244 bytes