Malicious PDF — malware analysis report

Static analysis result for SHA-256 574174e90aa64b29…

MALICIOUS

PDF

41.4 KB Created: 2020-07-09 02:21:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79df41500529e7d14941653bb608166b SHA-1: 638df1c0baa581e8d7526a08bcc478f7115dd612 SHA-256: 574174e90aa64b29d37584677a46d1b40cb2d1df7bbc2ed67d2aac98e6dc4a06
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate a link farm designed to potentially manipulate SEO or redirect users to malicious content. The presence of a 'download button' lure further suggests an attempt to trick the user into clicking a malicious link. No scripts were extracted, and the document body is heavily obfuscated, but the link farm and redirector are strong indicators of malicious intent.

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.cc/wb?keyword=persuasive%20writing%20techniques%20ks2%20pdf
    • http://files.enchantedlife.net/uploads/1/3/0/9/130969663/b517c6.pdf
    • http://files.kamawellnessperth.com/uploads/1/3/1/1/131164012/9625230.pdf
    • http://files.eslforpeace.org/uploads/1/3/0/7/130738806/nuvakuku-vewedoxogorovev.pdf
    • http://files.madrecbd.com/uploads/1/3/0/7/130775282/7196884.pdf
    • http://files.evemuson.com/uploads/1/3/0/8/130874541/rugodaw-votugosadu-tefetofuzatu.pdf
    • http://files.lummusbb.net/uploads/1/3/2/3/132302892/sugasil.pdf
    • http://files.jonsgardenblog.com/uploads/1/3/1/6/131606963/02819.pdf
    • http://files.foxlakeresort.com/uploads/1/3/2/7/132740482/98be447.pdf
    • http://files.azvrha.com/uploads/1/3/1/8/131871467/7006287.pdf
    • http://files.vision-batteries.com/uploads/1/3/1/3/131397930/87afc835635eb.pdf
    • http://files.ohebshalomtemple.com/uploads/1/3/1/3/131398432/fetumij_jilurefuzem_junomim.pdf
    • https://joxexib916360925.files.wordpress.com/2020/07/voxowewikad.pdf
    • https://gikeduzer.files.wordpress.com/2020/07/ralarazijovozu.pdf
    • https://fesopalom.files.wordpress.com/2020/07/10181645250.pdf
    • https://zitimaga.files.wordpress.com/2020/07/93955719114.pdf
    • https://zutakedolap.files.wordpress.com/2020/07/remarozub.pdf
    • https://sujoxina.files.wordpress.com/2020/06/30551349965.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vixegenosevisime.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94323725826.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26443777516.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57032902602.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/16711599054.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_off0000623f.bin
8ff117133630015c23910e3161ac34bd90a93628cc82aef67e91a7010de4cf5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623F 5632 bytes
font_01_sfnt_off00007565.bin
bb37a423136e731f7b821119561503ace7b4806056684966360453ac88daf81e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7565 10088 bytes

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