Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9b812885e34018c…

MALICIOUS

PDF

69.1 KB Created: 2020-08-10 20:50:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15f75df281a4398ff76cdc9cd328d3f7 SHA-1: 25d5fcf615e8007312239d1867992415f55b9c5b SHA-256: d9b812885e34018c9ae59f55526c6a762c51867cf6de27baeef6af86c0d19509
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'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links hosted on Shopify, likely for SEO manipulation to attract users searching for specific documents. The presence of a visual download button further supports a social engineering lure. No scripts were extracted, but the overall pattern suggests a phishing or malware delivery 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=bsc+part+2+physics+practical+book+pdf+download
    • http://gixoz.leftanglebeta.com/uploads/1/3/1/3/131379578/welobavo.pdf
    • http://files.dvaughnpershing.com/uploads/1/3/1/4/131409761/512544.pdf
    • http://files.fresnonutritionsolutions.com/uploads/1/3/2/6/132683111/9806049.pdf
    • http://files.campcurrier.org/uploads/1/3/0/7/130775998/zowawugojomu_gukimubor_xorisujajuzupaz_dilazuwozederav.pdf
    • https://cdn.shopify.com/s/files/1/0428/1548/8167/files/febelelawafigiraxu.pdf
    • https://cdn.shopify.com/s/files/1/0438/1097/9997/files/21069703881.pdf
    • https://cdn.shopify.com/s/files/1/0431/0509/1745/files/fesilo.pdf
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/vijoleritesavematab.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71895612735.pdf
    • https://cdn.shopify.com/s/files/1/0434/2530/0629/files/common_screen_resolutions.pdf
    • https://cdn.shopify.com/s/files/1/0434/8638/0197/files/97934141929.pdf
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/kexozezi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6763/7922/files/kapudo.pdf
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/craftsman_lt2000_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5125/2896/files/2018_equinox_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/zebco_404_manual.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_off0000cf69.bin
14b1a8c3b5192a92d527ad4daf0e8ef452d1e744981c875c450617026f00d41b
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF69 5824 bytes
font_01_sfnt_off0000e349.bin
c0a62535fb0b1e4af63c76e04398e33ed0a4caa5f738a67b291c03b9e6ae0631
pdf-font-stream PDF embedded font (sfnt) at offset 0xE349 10364 bytes