Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d997c0e1780598f…

MALICIOUS

PDF

86.9 KB Created: 2021-03-21 07:10:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 47f95aa2804eb19df85e15406ed322d3 SHA-1: 77c7fa0a286cb8b03f21316d3bf5c0c3a0bfa9f2 SHA-256: 6d997c0e1780598fd0564341fac1fc6bf32c9c65029b2ba4ee008093d8dade3f
126 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though obfuscated, suggests a lure related to a "Boy scout camping checklist pdf". Numerous embedded URLs, many pointing to disposable hosting, are present, indicating an attempt to redirect users to malicious sites. No scripts were extracted, but the presence of external URIs and the overall structure strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://pelibifir.ru/123?utm_term=boy+scout+camping+checklist+pdf
    • http://ledy66.net/does_tengo_have_an_accent_markvws5t.pdf
    • http://mudixefibewab.mywebcommunity.org/coronary_angiography_procedure.pdf
    • http://fizadote.22web.org/75236941627.pdf
    • http://covidcapsule.world/relic_watches_instructionsae3t4.pdf
    • http://wutopezogegusi.getenjoyment.net/21722191498.pdf
    • https://cdn-cms.f-static.net/uploads/4417207/normal_602a7bddf1c08.pdf
    • https://cdn-cms.f-static.net/uploads/4469834/normal_603a2e19e3e62.pdf
    • https://cdn-cms.f-static.net/uploads/4427293/normal_60258f7c7aa3b.pdf
    • https://cdn-cms.f-static.net/uploads/4382782/normal_60500f2402608.pdf
    • https://cdn-cms.f-static.net/uploads/4449421/normal_600e8be5425bb.pdf
    • https://static.s123-cdn-static.com/uploads/4402720/normal_5ff5ac3cab0cc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kunijudodo.rf.gd/3042207860.pdf
    • http://nabikelotedabe.epizy.com/kigegidoximibamokeje.pdf
    • https://uploads.strikinglycdn.com/files/7db408f3-c1d9-4ca8-b0d5-7ebbb567e098/pumevobi.pdf
    • https://uploads.strikinglycdn.com/files/4644e7b7-da80-4b38-8fdd-a18522445288/42044629819.pdf
    • https://uploads.strikinglycdn.com/files/af225cef-180f-4316-898c-468e39fdd36c/21601403581.pdf
    • http://likoruta.epizy.com/bdnf_and_exercise.pdf
    • http://kevikawimal.epizy.com/levelakagurenizeg.pdf
    • https://uploads.strikinglycdn.com/files/6f945c3c-33c4-4b3e-b09b-797616a332c5/directv_genie_red_light_blinking.pdf
    • http://xemunebo.atwebpages.com/journal_el_watan_aujourd_hui.pdf
    • https://uploads.strikinglycdn.com/files/d5285925-c034-4460-9b81-5e0c56be0623/phillies_schedule_2019.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe53.bin
2433383dba4bfb5ab355be56bf535917b779952a4e25d2a7c00963c028f24119		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE53 5568 bytes
font_01_sfnt_off00011120.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11120 1800 bytes
font_02_sfnt_off000119ad.bin
d2e5d3cfd0c824a91e5bd8f13581d1d71158f165929654ed60574a3ba1924351		 pdf-font-stream PDF embedded font (sfnt) at offset 0x119AD 11212 bytes
font_03_sfnt_off00013ffa.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13FFA 4324 bytes

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