Malicious PDF — malware analysis report

Static analysis result for SHA-256 361c0af7530621f9…

MALICIOUS

PDF

82.0 KB Created: 2021-03-31 08:37:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6671afbeff2754e2a4536e4da1803677 SHA-1: 2646f53c4985b1763d5c1e34568b5b6e859a415a SHA-256: 361c0af7530621f9260b87fe00ca27858aad40f33fc36f118691e8068ec98b0f
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though partially corrupted, suggests a lure related to educational materials, specifically an answer key, to entice users to click the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=unidad+5+leccion+2+gramatica+a+answer+key
    • https://gubijebe.weebly.com/uploads/1/3/1/4/131483267/28d3b.pdf
    • http://dudoxanudito.scienceontheweb.net/all_automobile_parts.pdf
    • https://cdn-cms.f-static.net/uploads/4469106/normal_605c0327b11ec.pdf
    • https://pukukadusese.weebly.com/uploads/1/3/4/6/134666137/jomafowikozo_bagaboxuzo_fugososumob_josaxomaxu.pdf
    • http://pijubunoze.22web.org/what_is_the_principle_of_energy_conversion.pdf
    • http://legexebe.medianewsonline.com/logugavenotikopoko.pdf
    • https://cdn-cms.f-static.net/uploads/4416802/normal_604b9cc3527aa.pdf
    • http://pewujok.mypressonline.com/libros_del_blog_del_fotografo_gratis.pdf
    • http://rigudozefogo.mypressonline.com/what_do_the_symbols_on_a_dashboard_mean.pdf
    • http://wizapivizesib.mygamesonline.org/anatomy_of_human_spinal_cord.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://jizemefuzix.epizy.com/wajosuluwomefog.pdf
    • https://uploads.strikinglycdn.com/files/37e295a5-b553-4800-af18-765796e482d8/logical_reasoning_math_questions_and_answers.pdf
    • http://vojemigami.rf.gd/manual_de_taller_chevrolet_aveo_2012_gratis.pdf
    • http://degumewo.rf.gd/gagikimekexex.pdf
    • http://raxaxeve.rf.gd/what_exactly_is_a_grant_of_probate.pdf
    • http://sexikiti.epizy.com/65816103193.pdf
    • http://joxelugokolutu.rf.gd/holden_barina_2006_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/de257126-f030-47f7-9ce6-e22fb7a1cb92/do_you_see_the_baby_in_rosemarys_baby.pdf
    • https://uploads.strikinglycdn.com/files/b86dd452-6a0f-4399-877d-b4d53da84db7/97205816687.pdf
    • http://lesunew.epizy.com/21859907466.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_off000100f8.bin
e1d5d03f0b20b08bf091b288437953bcf4c6cf4ec049234ae4ac4a8bf5888686
pdf-font-stream PDF embedded font (sfnt) at offset 0x100F8 5764 bytes
font_01_sfnt_off000114a5.bin
f54d94d5dac2786b4a0931df79b1e642d2b00bae4a40684c9597624b0f0f4419
pdf-font-stream PDF embedded font (sfnt) at offset 0x114A5 11256 bytes