Malicious PDF — malware analysis report

Static analysis result for SHA-256 e78fcf9a408a222f…

MALICIOUS

PDF

74.2 KB Created: 2021-03-30 19:24:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a24828c252bbe845b4cbefe1065ec228 SHA-1: b2d77d8547e471c719b2e2e3b1fc2b0bd9d77e50 SHA-256: e78fcf9a408a222f80c6495bf1721a398d772825694a84a2a6e8cd48809bac28
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One of the primary external links, 'https://seumenha.ru/strik?utm_term=you+before+me+streaming+vostfr', is presented alongside a document body that appears to be garbled but contains a reference to streaming. The presence of many PDF links, including 'http://save50it.info/niredawizufolenorrj6v.pdf', suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 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.
  • 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/strik?utm_term=you+before+me+streaming+vostfr PDF link annotation
    • http://save50it.info/niredawizufolenorrj6v.pdfIn PDF document text
    • http://dk-inc.xyz/knowledge_is_power_meaning_in_englishv0rel.pdfIn PDF document text
    • http://reduslim-sito.site/wusirapumujofutogezaza3hx90.pdfIn PDF document text
    • http://b4shop.icu/genoxiwigedid6z1o3.pdfIn PDF document text
    • http://qqkaxes.xyz/excel_link_sheets_in_workbookgk3yt.pdfIn PDF document text
    • http://noverst.xyz/95646997636d9yir.pdfIn PDF document text
    • http://storeyou.store/will_the_white_princess_have_a_season_2jrjxn.pdfIn PDF document text
    • http://sodahub.pro/nogewuxesirilint97s.pdfIn PDF document text
    • http://bio-ita.fun/jotawipugesenufo99mkd.pdfIn PDF document text
    • http://belkwigs.com/zetaxetorenbdq20.pdfIn PDF document text
    • http://idealica-official-it.website/fuduninitegirusogugag2okqh.pdfIn PDF document text
    • http://hookup755.fun/my_hero_academia_two_heroes_freeje718.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/what_is_a_staple_free_stapler.pdfIn PDF document text
    • https://49884795-3b66-401c-adaf-b59e999553af.filesusr.com/ugd/8bd6c9_7bd8016f32104449981c8e0ae2426134.pdf?index=trueIn PDF document text
    • https://03aaa7dd-6608-466c-a68c-f41c59811c05.filesusr.com/ugd/ae15ca_2429e72c73314302860351a43f67332a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/keboginabowugebijavaxovir.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/wisaxis.pdfIn PDF document text
    • https://s3.amazonaws.com/gogunabones/85442758415.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/who_waited_for_his_wife_in_the_bible.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/is_obamacare_still_mandatory.pdfIn PDF document text
    • https://b7d3a0ae-8059-487b-8826-088776693174.filesusr.com/ugd/8d23e4_ebbd5b263ac941a19208d3bf557a7911.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/julaxel/alice_in_wonderland_with_illustrations.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/les_coliformes_totaux_et_fcaux.pdfIn PDF document text
    • https://0cc2a7d0-6f33-4335-9ec9-554d9418487e.filesusr.com/ugd/cb4a18_1711a9febe114c478c4f2edf4618dc43.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/savifin/xazulisekojukupuniwudu.pdfIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 5216 bytes
SHA-256: d7b62fd6862a83b94037916b80e84d44f07ba4e5bec1c73677fb6dda2215e933
font_01_sfnt_off0000f354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF354 12304 bytes
SHA-256: e4104960f675ff988f3668f0e6e800a31b0b2ad77cd18ad45beff9df2091327e

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