Malicious PDF — malware analysis report

Static analysis result for SHA-256 de89df972a60293a…

MALICIOUS

PDF

73.4 KB Created: 2021-02-24 10:04:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0ec9aa3849a516047de3e293fc81c4b4 SHA-1: 971a5a0bdb7587ee545f441406929db37faea7b9 SHA-256: de89df972a60293a7aec8a51a44a215ebccdd33c1ec77657eb613de4adcc7623
186 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs and a document body that mimics information about public records, a common lure for phishing or malware. The heuristic 'SE_TRAVEL_SUPPORT_PHONE_SCAM' and 'ML_NYX_PDF_MALICIOUS' indicate a high likelihood of malicious intent, likely to trick users into visiting malicious sites or providing sensitive information. The presence of multiple disposable domains and link farms further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Travel-support phone-number stuffing scam critical SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://baarspo.ru/wix?keyword=st+charles+county+mo+register+of+deeds PDF link annotation
    • http://instas.site/kavuxewisivefm116n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482018/normal_602c3a7e2ec9e.pdfIn PDF document text
    • http://chategratis.online/90572815712pebmc.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/cugeicb/litofowuxagepelunufivu.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/hiyiaha/zimogadogakeniv.pdfIn PDF document text
    • http://erogan-encolumbia.site/apache_ignite_tutorialbfbzt.pdfIn PDF document text
    • https://cdn.sqhk.co/sedazozesufu/ifPhSWo/knights_of_ages.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/pRigjPo/cara_download_shoujo_city_3d_di_pc.pdfIn PDF document text
    • http://forsage.pw/53772246608xr98k.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/13889694771.pdfIn PDF document text
    • http://keto-menu.online/612262863118katj.pdfIn PDF document text
    • https://cdn.sqhk.co/bijininabex/hgjeNm9/woxikuxobawaseziravawob.pdfIn PDF document text
    • http://nadahul.ru/300_best_canadian_bread_machine_recipespxf2v.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/35918330273.pdfIn PDF document text
    • https://s3.amazonaws.com/dukajevo/dekegebokamovu.pdfIn PDF document text
    • http://lnstagram-helps-contact.com/72944459634kusxa.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/eZY4Wjd/mn_vikings_record_2019.pdfIn PDF document text
    • http://english-10.site/feveleroxariri9dlju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5fdc6e2879264.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000e095.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000e095.bin)
    • 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 extracted file (font_00_sfnt_off0000e095.bin)

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_off0000e095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE095 5640 bytes
SHA-256: 3e59b9fe02ee60813f371ebcb217efa1431d1a6cc1ae8604524644dbf6a3e3d3
font_01_sfnt_off0000f3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A3 10616 bytes
SHA-256: 3cd0cb2c344c1b95fe8dcda14394005c800001be2847b51e799686b195ec4815

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