Malicious PDF — malware analysis report

Static analysis result for SHA-256 96bec07e156a6081…

MALICIOUS

PDF

42.7 KB Created: 2020-08-19 22:04:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f37276dd677c925ff2837d0c44f85967 SHA-1: 92f6901052dc17dce22e401adf1eb18defbaeb6e SHA-256: 96bec07e156a6081df0be895ea8e0ecc5ac0556536cb5ce8b6c88bb1292a954a
152 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one critical link pointing to a known malicious redirector. The document body, though obfuscated, contains text related to marketing case studies and includes the malicious URL. This suggests the PDF is designed to trick users into visiting the redirector, likely leading to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=sample+marketing+case+study+questions+and+answers
    • http://xoxoxovut.dvremodel.com/uploads/1/3/0/8/130814328/ruwituzuduluwa_pisex_laxadekuze_temugemebazuz.pdf
    • http://files.ellewyant.com/uploads/1/3/1/6/131637014/jopelozodumu-dirivodiboxu-jovat.pdf
    • http://files.staceyart.net/uploads/1/3/0/8/130814960/pejebumitosuligutazi.pdf
    • http://files.eleanormcgough.com/uploads/1/3/1/4/131453560/pemapi-pexizoliget-fizuledaga-kololakij.pdf
    • http://files.becuriouscuisine.com/uploads/1/3/0/7/130739674/zororuxujedimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/gokoribit.pdf
    • https://cdn.shopify.com/s/files/1/0432/7142/2102/files/83949222480.pdf
    • https://cdn.shopify.com/s/files/1/0433/4416/7064/files/roxix.pdf
    • https://cdn.shopify.com/s/files/1/0449/5199/4536/files/jan_brzechwa_akademia_pana_kleksa.pdf
    • https://cdn.shopify.com/s/files/1/0454/7146/5630/files/dagobakobojo.pdf
    • https://cdn.shopify.com/s/files/1/0432/1171/8820/files/47593592918.pdf
    • https://cdn.shopify.com/s/files/1/0429/0658/3203/files/21541185025.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/49146125120.pdf
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/anesthesiologist_s_manual_of_surgical_procedures.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/diagnostico_de_impacto_ambiental.pdf
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/phonics_spelling_grade_1.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_off0000683a.bin
3deda44e3c68ead48132439664012cdaff7c75f6a3268f8765b4b76e6479f462
pdf-font-stream PDF embedded font (sfnt) at offset 0x683A 5880 bytes
font_01_sfnt_off00007c2f.bin
efb18762092d1efb80e11b2af0c97bc258c54541e32ada298305be7358e32015
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C2F 9888 bytes