Malicious PDF — malware analysis report

Static analysis result for SHA-256 eeb655cc1056f243…

MALICIOUS

PDF

82.7 KB Created: 2021-03-16 10:49:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: e2c4d4d8bbd1f0cf04e42c2d91cb54cc SHA-1: a15de39281f73a8da0da9e70dd65da82c0123e9d SHA-256: eeb655cc1056f24365ee58136dc0a6799b354c8d886c5f6550fd9e9d2524aab5
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm designed to distribute malware or conduct phishing. The document body, though heavily obfuscated, appears to be a lure related to 'dragon ball z games for ios', aiming to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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 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.
  • 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/123?utm_term=dragon+ball+z+games++for+ios PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4421461/normal_601253c7b0dc6.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/S7zuoie/pororo_penguin_run_game_play_online.pdfIn PDF document text
    • https://cdn.sqhk.co/gurudulep/pjalgjY/1382417266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453914/normal_5fc56f79f2508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486565/normal_600eb2048d635.pdfIn PDF document text
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/wazoxerisumo_kokajabizome.pdfIn PDF document text
    • https://cdn.sqhk.co/nitagalut/hdfljcQ/35013985375.pdfIn PDF document text
    • https://cdn.sqhk.co/gajerivab/d1hahb4/super_wings_jett_run_mod.pdfIn PDF document text
    • https://kekageguva.weebly.com/uploads/1/3/0/7/130776826/lajasonekebides_fitesofuwi_loboxeded_juwofonejinulu.pdfIn PDF document text
    • https://dazifefizax.weebly.com/uploads/1/3/4/8/134854215/6008407.pdfIn PDF document text
    • https://titezexi.weebly.com/uploads/1/3/4/6/134639754/kebezokojutalapad.pdfIn PDF document text
    • https://cdn.sqhk.co/fogibadeku/gihgpib/mubifiragigadozuj.pdfIn PDF document text
    • https://loputoporebile.weebly.com/uploads/1/3/4/8/134847610/23178.pdfIn PDF document text
    • https://cdn.sqhk.co/zimevegi/jPbjfuV/19082163717.pdfIn PDF document text
    • https://cdn.sqhk.co/fudamewojaf/wibTlhh/baxiworitupabuxijuduratab.pdfIn PDF document text
    • https://setixifofu.weebly.com/uploads/1/3/1/6/131606861/6803032.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://1ce8651a-bfbb-4b9a-b1bf-24b3b574775a.filesusr.com/ugd/ac72e0_a26bfab88262444088cd7be8f588c937.pdf?index=trueIn PDF document text
    • https://d4078116-a2d5-466f-97e6-20d899f6ca30.filesusr.com/ugd/576447_c36dedc4c6f74f22af3a61651d393a33.pdf?index=trueIn PDF document text
    • https://0df6220b-9630-4647-aab6-0d9db69b9d59.filesusr.com/ugd/8b97dd_5fb740aafda14d7d9a03523d6048539e.pdf?index=trueIn PDF document text
    • https://e668d0bc-6b9c-4787-ac64-5363b724ef62.filesusr.com/ugd/6ec699_1562fa2ea1af4bdbbab09ddcf926493a.pdf?index=trueIn PDF document text
    • https://4abf464d-34d5-4c80-8de5-e64f30e04530.filesusr.com/ugd/8b3eb5_dd984f33f1b8468aa88b06896e7ef663.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E4 4984 bytes
SHA-256: dbe375d36085b55b41d05ccaf0f2a79a34d66ab6835a47c1128a7eaf1f1ab4f5
font_01_sfnt_off00010abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABB 10784 bytes
SHA-256: 81927dea32a06864eda661d8b69d6f162e3bd80a49a050a144e0fc29e77a6c5b
font_02_sfnt_off00012f66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F66 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333