Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e63761743a1175d…

MALICIOUS

PDF

68.3 KB Created: 2020-08-06 02:03:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 874ca1a3efc8a74b0d81dd46cb73b417 SHA-1: e5d491860624881ad715c8521273f08f08aaf5b8 SHA-256: 7e63761743a1175d36cfc91ba50eb48d965bfb331e292fd97b52a96a8f2d62ad
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered the heuristic. 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.com/pify?keyword=beamforming+in+mimo+pdf
    • http://files.lisaxing.com/uploads/1/3/0/8/130874102/pujofoziz-kokamimopuba.pdf
    • http://files.signaturewoodworkinginc.com/uploads/1/3/1/3/131379301/bitaxesiwozit.pdf
    • http://files.bretcharmanphotography.com/uploads/1/3/1/0/131069899/9690994f441634.pdf
    • https://cdn.shopify.com/s/files/1/0437/1811/5480/files/kijuvupijudupazezo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2836/files/71578712462.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/gapps_cm_13.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/96084602581.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ximulomonarosaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1987/8048/files/fuxabewedezovonokovipoli.pdf
    • https://cdn.shopify.com/s/files/1/0434/3850/6146/files/story_elements_anchor_chart.pdf
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/lesepitoboximolovodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0096/files/buzopalezegunomo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/git_pull_from_master.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/xidamexesobitunu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0470/6464/files/rafozixidazanimigu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9612/8153/files/topijunitazeke.pdf
    • https://cdn.shopify.com/s/files/1/0435/9965/9176/files/temapero.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009de9.bin
68803ce9cbd2b1b28263e3576f090ec54ef06e21e68f8ff065add50cb97b0f5c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DE9 8048 bytes
font_01_sfnt_off0000b916.bin
c09704098da3b9a3f81c26bfa0065ae44d1dadfbfe5ac778d1c6ae058c1a6ab4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB916 5200 bytes
font_02_sfnt_off0000cab7.bin
a1f94263deac891f13a4c909e088f0dab53d6e517e650817b93308ef654645e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAB7 10532 bytes
font_03_sfnt_off0000ef07.bin
c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF07 16060 bytes

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