Malicious PDF — malware analysis report

Static analysis result for SHA-256 1896e863cf30d994…

MALICIOUS

PDF

68.2 KB Created: 2021-03-25 12:19:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 6736110994eafc69e974c83a68816fe2 SHA-1: 5bed9bf7940fbc41b8311cd76e1e7e4cc33f03df SHA-256: 1896e863cf30d99403ca1ace3721c89a9de1c967fa0d713c5f3dbf08944d41fa
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable domains and identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://mezovuduw.ru/wix?keyword=vocabulary+workshop+level+f+unit+5+test+answers PDF link annotation
    • http://fulokixowo.scienceontheweb.net/pekaguwejipi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418963/normal_5ffea821812d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448330/normal_5ffcad8349bed.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/jivonozo_lazevejibe_jidamopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421056/normal_605bb02940de8.pdfIn PDF document text
    • https://lipuguxe.weebly.com/uploads/1/3/0/7/130738524/fomuximibodivulivone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485929/normal_604120e15b09b.pdfIn PDF document text
    • https://safalijig.weebly.com/uploads/1/3/1/0/131070993/kadafidemix-satunovima-pipaganatem-lovazogugosexax.pdfIn PDF document text
    • https://jikuvubavul.weebly.com/uploads/1/3/5/9/135964228/figeji_jexedasifovik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369502/normal_5ff2af3e83c91.pdfIn PDF document text
    • https://kevosenebiv.weebly.com/uploads/1/3/1/8/131871602/felifid-kofurudub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369143/normal_5fcc92e373232.pdfIn PDF document text
    • http://tixaman.scienceontheweb.net/dubozavenutavejosuge.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5febeb7bef4eb.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/power_book_2_ghost_episode_9_soundtrack.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/00e391f8-a093-45ba-827f-c244dc4ec1cb/honda_express_moped_1980.pdfIn PDF document text
    • http://samajusinifako.atwebpages.com/50707881789.pdfIn PDF document text
    • http://wibitatazureb.rf.gd/pay_scale_for_cloud_computing_in_india.pdfIn PDF document text
    • http://jawikiluzejibe.epizy.com/shakespeare_macbeth_act_1.pdfIn PDF document text
    • http://wizifaj.rf.gd/dapixotifewisoxunufan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba4e14d-c212-495e-94e7-ba667a6c4a92/30420243317.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd37a892-6c00-42aa-899d-10b914d4e6bd/three_words_to_describe_poetry.pdfIn PDF document text
    • http://dinukafewu.epizy.com/can_samsung_smart_tv_use_airplay.pdfIn PDF document text
    • http://tasodeporojunez.epizy.com/us_citizenship_test_questions_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25e6e793-0d17-42a1-9640-0a0ee26f40ef/87258191715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9e89464-a5f1-4d74-8486-4a9ebc6fbb37/all_english_words_with_tamil_meaning.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_off0000cea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA5 5652 bytes
SHA-256: e4738265a9ca9b228844f0b1103fc48e12d3d4b16bca640e38ad753f4b052c2f
font_01_sfnt_off0000e1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FA 9692 bytes
SHA-256: cca0babfe8517df648a5af242833efcb615665e7109efd01a69985890fb42730