Malicious PDF — malware analysis report

Static analysis result for SHA-256 313c9ad3246f3038…

MALICIOUS

PDF

41.0 KB Created: 2020-08-21 17:27:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8805a5cce15eb76091e309bbab6ba6dc SHA-1: ba095d44b06f4f82522511c01db42b479d4a8ea5 SHA-256: 313c9ad3246f3038e4911cd8d21e788d381ef43978f234ea7707d22916c9aaec
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, indicating a link farm. One of the primary links, https://ttraff.cc/pify?keyword=telecharger+anime+slayer+apk+android+gratuit, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to downloading an anime application, suggesting a lure to trick users into clicking the malicious link. The presence of a malicious redirector and a link farm strongly suggests a phishing or scam attempt.

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=telecharger+anime+slayer+apk+android+gratuit
    • http://zofaza.cactusgems.com/uploads/1/3/2/6/132682076/dokesoja_kalebu_rowolofanajun_mogixebuwuxot.pdf
    • http://files.thegoddessloft.com/uploads/1/3/1/4/131437770/nobikizokitepo-levewubutulave-bekomujudojuxe-fijevis.pdf
    • http://bijebi.hireagreatdj.com/uploads/1/3/2/7/132712324/9877264.pdf
    • http://dolix.childrenswarehousenyc.com/uploads/1/3/0/8/130874493/9784398.pdf
    • https://cdn.shopify.com/s/files/1/0432/6211/6008/files/wuvagizufasariruxajeduta.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/41392808315.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/nagixovowadevarit.pdf
    • https://cdn.shopify.com/s/files/1/0434/0970/3062/files/zefusunipexoxogodiz.pdf
    • https://cdn.shopify.com/s/files/1/0434/9342/5316/files/bexanebosuja.pdf
    • https://cdn.shopify.com/s/files/1/0436/4979/4213/files/mufulugafireguvux.pdf
    • https://cdn.shopify.com/s/files/1/0429/3168/3484/files/proyecto_de_tesis_ucv.pdf
    • https://cdn.shopify.com/s/files/1/0436/1181/6099/files/varices_esofagicas_por_cirrosis_hepatica.pdf
    • https://cdn.shopify.com/s/files/1/0434/1697/7559/files/wowabuwaxibovodotosim.pdf
    • https://cdn.shopify.com/s/files/1/0435/7075/7795/files/engineering_mechanics_statics_bedford.pdf
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/yii2_advanced_template_htaccess.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/astrazeneca_pipeline.pdf
    • https://cdn.shopify.com/s/files/1/0427/7148/0742/files/dark_souls_3_fallen_knight.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_off000055cd.bin
c70705c7d1a37c6f53db5379a82584c5f5389901432e6f69fc7a403e11c6d1c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x55CD 5604 bytes
font_01_sfnt_off000068b3.bin
1ee51a77104278f704efe94bc45b3bc5603e239e51463a95f76a95bb7d87727e
pdf-font-stream PDF embedded font (sfnt) at offset 0x68B3 14324 bytes