Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2c39d6effc44cb7…

MALICIOUS

PDF

75.5 KB Created: 2021-04-27 19:03:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 34b542ad5d6646e5b140e322930039a1 SHA-1: 3320892a166eb34b173a58c61c7601f0e601a531 SHA-256: e2c39d6effc44cb776a1baf1c675fca0fb99676c51e237b6608c2ee992265a7f
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'seumenha.ru', suggesting it acts as a lure to download further content. The PDF's structure and the presence of multiple links on disposable hosting further support its role as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://seumenha.ru/strik?utm_term=the+book+of+thomas+pdf+free+download PDF link annotation
    • http://detonic-ro.website/cyprus_tourist_visa_application_form2ogjw.pdfIn PDF document text
    • http://pshcomonhere.xyz/baby_bullet_containers98ybk.pdfIn PDF document text
    • http://maritimog.medianewsonline.com/katamabegoropurazivanu.pdfIn PDF document text
    • http://naturebiolog.fun/23334884168riwuo.pdfIn PDF document text
    • http://copyrightsupporthelpcenter.com/pathology_blood_report_sampleh2ag7.pdfIn PDF document text
    • http://nogurufegu.mygamesonline.org/kuliso.pdfIn PDF document text
    • http://creamwalls.space/which_rat_had_the_fastest_baseline_metabolic_rateej10b.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/my_fios_voice_remote_wont_pair.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/julevako.pdfIn PDF document text
    • http://kigaruzolalo.mypressonline.com/47195881234.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_a266baf118124a82a412c604f639646b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4598bb7f-c778-4795-af76-b58577bbb4f0/how_to_add_mp3_to_iphone_using_itunes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71b1d0a1-4402-44dd-a840-c80be41735c9/how_to_write_thirty_two_hundredths_as_a_decimal.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/girl_boss_baby_images_png.pdfIn PDF document text
    • https://add83a7c-0e31-48b3-928b-061d82ba9144.filesusr.com/ugd/205ae4_c0b49b017ea6425e802f5f6db4a31a90.pdf?index=trueIn PDF document text
    • https://3b044092-e341-4c69-a8e2-52b14fc1865f.filesusr.com/ugd/370021_748948b429f7446593a9b5217ec9b7c1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ligole/how_to_make_a_simple_emp_jammer.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/excalibur_car_alarm_remote_start_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb8eeb0e-f6e0-487b-b773-5634d1908df7/how_to_look_at_a_star_through_a_telescope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e40d8edb-50f4-4540-8c20-e2c2edc5de71/ranovodozodaluxipusuzuruj.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/67347579566.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e75a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75A 5528 bytes
SHA-256: ab17b0120e3ba3b2ff73313249c9f121b556e38579edb9628ab4943cf4f783c7
font_01_sfnt_off0000fa01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA01 10876 bytes
SHA-256: 004ff07b8a5c1b9a0b0db02ba204f53f1f0702284f43fa6ee46ac6ac384109c6

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