Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab97c9cd65fd03e…

MALICIOUS

PDF

62.5 KB Created: 2020-08-08 16:52:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecaed8ae23b04be2461c7e648507b05e SHA-1: 125e32afc8a50ccc1f9bfc38f831e56c82872302 SHA-256: 2ab97c9cd65fd03ecee55eb23791d6b45913000dfed3eb954fb6a2e46af8ad75
154 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a high number of embedded links, with one pointing to a known malicious redirector. The document body contains text that appears to be obfuscated or corrupted, but the presence of numerous external links, including one to a malicious redirector, suggests a phishing or malicious redirection attempt. The ML classifier strongly supports the malicious verdict.

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.ru/pify?keyword=enlaces+ionicos+covalentes+pdf
    • http://files.dennisgshoemaker.com/uploads/1/3/1/4/131406507/3984617.pdf
    • http://files.margokirtikar.com/uploads/1/3/0/7/130775171/koviwofarolaman.pdf
    • http://goduzilew.pandanvalleyenbloc.com/uploads/1/3/2/3/132303382/piborekomagatuwoj.pdf
    • http://files.fastblueprints.com/uploads/1/3/2/7/132740997/menudobez_rujivewojovonu_fubifumewes_mipup.pdf
    • http://files.matthewfleckenstein.com/uploads/1/3/1/6/131606201/04bcfa4c.pdf
    • https://cdn.shopify.com/s/files/1/0447/8749/9157/files/statistical_methods_agrimoon.pdf
    • https://cdn.shopify.com/s/files/1/0429/3417/3859/files/the_beekeepers_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0437/8243/9063/files/63352967803.pdf
    • https://cdn.shopify.com/s/files/1/0431/4906/6397/files/49584534185.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/zosodofafogulukewupafinad.pdf
    • https://cdn.shopify.com/s/files/1/0435/0928/5024/files/2786075720.pdf
    • https://cdn.shopify.com/s/files/1/0432/1627/3563/files/31531003166.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wefudebavisizaku.pdf
    • https://cdn.shopify.com/s/files/1/0432/0899/9074/files/abzurdah_libro_completo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5689/7947/files/50251547964.pdf
    • https://cdn.shopify.com/s/files/1/0435/6374/5441/files/business_management_a_value_chain_approach_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/0610/7552/files/cambridge_checkpoint_science_coursebook_7.pdf
    • https://cdn.shopify.com/s/files/1/0431/4087/4408/files/newukupuvubezo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4976/3487/files/nervous_system_diseases_symptoms_and_treatments.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000092dc.bin
f42028a31e090cb11680ada87ad29690b17451867869e33a86d5d20775827383		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92DC 5072 bytes
font_01_sfnt_off0000a440.bin
0dfcadad781bc337465ae4c6d30008f248dc6134aaae45f0e31be8fa1d4c7c19		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA440 16320 bytes
font_02_sfnt_off0000d606.bin
01918ab328aad74c9e8f640f01f786fd0c2e0e9f3673bd8045474dd117871356		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD606 16080 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.