Malicious PDF — malware analysis report

Static analysis result for SHA-256 c24c0f8c2e76461e…

MALICIOUS

PDF

76.1 KB Created: 2021-03-23 00:58:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 87caed23e8e71ed38282fb70bb1d3404 SHA-1: 456951a7ee5266dfdc902cb0a2a004ff75d3dc0e SHA-256: c24c0f8c2e76461e2eda3d8b77a4c353f26984e9fb8f6e1d225b43757acf37bc
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://golowaki.ru/wix?keyword=weather+forecast+for+22443', which is likely used to deliver a malicious payload or conduct phishing. The document body, though heavily obfuscated, contains text related to 'weather forecast', suggesting a lure. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wix?keyword=weather+forecast+for+22443
    • http://rokuboxajiga.medianewsonline.com/pdf_to_word_converter_free_download_for_android_mobile.pdf
    • https://cdn-cms.f-static.net/uploads/4529024/normal_604b9c1ee318a.pdf
    • http://kiritisivasol.mywebcommunity.org/46470319093.pdf
    • https://cdn-cms.f-static.net/uploads/4387565/normal_5fdab2c8286a1.pdf
    • https://cdn-cms.f-static.net/uploads/4459640/normal_6013c4b4092f9.pdf
    • http://sandwichhq.club/dufexazopurorenara0hrep.pdf
    • http://xuzobinemipivor.mygamesonline.org/48287611066.pdf
    • http://fofiwafajelerax.sportsontheweb.net/39156855333.pdf
    • http://bigno.space/how_a_realist_hero_rebuilt_the_kingdom_rawkodze.pdf
    • http://bixaxivajujojar.mypressonline.com/how_to_say_my_brother_in_mexican.pdf
    • http://magnetfix.store/vuteteli49v30.pdf
    • https://static.s123-cdn-static.com/uploads/4368230/normal_5fcc60c1971b5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fidalanono.myartsonline.com/dell_optiplex_9020_power_supply_replacement.pdf
    • https://b0b89e74-75d6-43b0-bb8f-fa2cd9bd5f5b.filesusr.com/ugd/b5ae3e_f93ecb0ff26949f8a4823a0f76ea552f.pdf?index=true
    • https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_3400040b23ee4253afee92b98ff1093a.pdf?index=true
    • https://s3.amazonaws.com/bogeguva/abcd_2_movie_mp4_hd.pdf
    • http://wuwedilejom.myartsonline.com/sorinigizozak.pdf
    • https://06e27459-8a58-4d01-a48e-f853eab966f6.filesusr.com/ugd/55f1a0_71f3c6b877314948ab019a926f5cc2dc.pdf?index=true
    • https://s3.amazonaws.com/zobuwubedak/sheet_music_for_jingle_bell_rock_piano.pdf
    • http://jaweratiz.atwebpages.com/high_cholesterol_foods_to_avoid.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_off0000eb23.bin
5d8d152eafd953df86a33bf5af0b29826ec6b0032084ebb3b57dc7327b6225c8
pdf-font-stream PDF embedded font (sfnt) at offset 0xEB23 5332 bytes
font_01_sfnt_off0000fd58.bin
970376fad3e7bb938ab6c2ed22b0194d197c13aacfbd1a434322a10e589b9ef7
pdf-font-stream PDF embedded font (sfnt) at offset 0xFD58 11136 bytes