Malicious PDF — malware analysis report

Static analysis result for SHA-256 716afddce2dff1a4…

MALICIOUS

PDF

71.3 KB Created: 2021-02-27 18:56:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5dc0aba6c2d11bdb2f49e77f8144574a SHA-1: 99a85f66daa29f78ae3e46fe0d2abd60ea6d90bc SHA-256: 716afddce2dff1a4d6ac425ce7861b9f65ac9842aaacf87e14d27a0021f5c15e
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'computer repair price list', likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://golowaki.ru/123?utm_term=computer+repair+price+list+philippines
    • https://vetafewilede.weebly.com/uploads/1/3/1/4/131408572/9455913cc2f89.pdf
    • http://lobabinuladeri.medianewsonline.com/bojuneg.pdf
    • https://cdn.sqhk.co/mizopopowaze/imvhbid/amtrak_schedule_los_angeles_to_chicago.pdf
    • http://lefilew.iblogger.org/99547508121.pdf
    • https://koxizekeb.weebly.com/uploads/1/3/4/7/134770308/xokal.pdf
    • http://kekijojovif.sportsontheweb.net/how_much_does_it_cost_to_train_as_a_forklift_driver.pdf
    • https://cdn.sqhk.co/vubiwete/ahdibjc/forest_kingfisher_images.pdf
    • https://nipixosawapur.weebly.com/uploads/1/3/1/1/131164079/477b4f2f4773c.pdf
    • http://paxivevazuf.iblogger.org/83844670588.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://piwolimosopobu.myartsonline.com/autocad_2019_free_trial_mac.pdf
    • http://dojiseb.epizy.com/bose_s1_pro_specs.pdf
    • http://sidakofonol.epizy.com/canadian_passport_application_child_form.pdf
    • http://pivekukevojadu.epizy.com/makevokemazaloxilet.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db78.bin
24f9dda070ea8b3e98ca212315534ad0b77e9c2c28284c3e04d851f56f87cc34
pdf-font-stream PDF embedded font (sfnt) at offset 0xDB78 5076 bytes
font_01_sfnt_off0000ec83.bin
3f6d15ebabaad9a0775ae3dc0377830338794892c9331713107167657789d713
pdf-font-stream PDF embedded font (sfnt) at offset 0xEC83 10464 bytes