Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b9deafecb7c144…

MALICIOUS

PDF

75.5 KB Created: 2021-03-12 03:02:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 40cd5cfe5baabf9fecd1e2e62edc6200 SHA-1: 6eabfedddb48aa1c0051129e30a33d73664fd8e1 SHA-256: 89b9deafecb7c144e2b958c7a629cd6e64b022edb6280c5d5c7bbf91268a316d
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to other PDFs, suggesting a link farm or SEO spam operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs are the primary indicators of compromise, directing users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://resalured.ru/aws?utm_term=a+christmas+memory+by+truman+capote+pdf
    • https://cdn.sqhk.co/gimenuxot/jbOnfge/wesoranazabelopaj.pdf
    • https://cdn.sqhk.co/xavonepez/haghiF1/kirotopasijebubu.pdf
    • https://cdn.sqhk.co/tevunufoba/iggirha/build_roads_app.pdf
    • https://cdn.sqhk.co/guwaloxipete/i6jiZLd/stores_in_bay_village_long_beach_island.pdf
    • https://cdn.sqhk.co/nixivezez/ijbgg4d/60030444550.pdf
    • https://cdn.sqhk.co/xemuxebu/jhz6kg7/cheat_lightning_fighter_2_mod_apk.pdf
    • http://mamontov-net.cc/soluxakegugulugetevajadxdz1s.pdf
    • http://sungo1.space/jozexiluwm50on.pdf
    • https://cdn.sqhk.co/revujinarewu/pijhhmw/compra_de_equipaje_extra_aeromexico.pdf
    • http://techanomic.com/32440432569gg9ku.pdf
    • http://tonevagewalilu.medianewsonline.com/dunalilav.pdf
    • http://hookup753.fun/cardigan_form_di_namqpx8j.pdf
    • https://cdn.sqhk.co/dexasubu/ehjBegh/sakiwafowupugugeb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gevejonitu.onlinewebshop.net/redilamif.pdf
    • http://bumufemukelogik.epizy.com/5069975617.pdf
    • https://ce55c564-0e79-48ac-bd91-a034cff8554b.filesusr.com/ugd/bd1fc0_cfa6101c6f1c4d27ac28f41b8b03aa23.pdf?index=true
    • http://kejidexod.epizy.com/nasolafogeporapakubuxitok.pdf
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_fccf879d55164a8aa972cd21471661b0.pdf?index=true
    • https://ed21222e-fee3-4fab-8b52-e2ddb7bb35ab.filesusr.com/ugd/e73fea_22c036b062444fa8bf04f07f362aabe8.pdf?index=true
    • https://979cd01f-16ea-4d2c-b189-234964c95597.filesusr.com/ugd/d4c4cf_f4833a6be6a44ac29a82d45ea5ba7645.pdf?index=true
    • 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_off0000e907.bin
e675ee44f5515d82bf09561e9d0f2042f27eb23907c486994f3fc1f9790c6681		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE907 5592 bytes
font_01_sfnt_off0000fbe1.bin
1905ba173f4465048cd939190a3106ca342505f497785581998aa20279b24bae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE1 10788 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.