Malicious PDF — malware analysis report

Static analysis result for SHA-256 d650e62f8e9123c4…

MALICIOUS

PDF

75.8 KB Created: 2021-04-28 20:49:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: b8fee5aa0e7b320e98e5da0c47cba0ef SHA-1: 16f51ceac72ee1056e2bf0cdd77238efd65986c9 SHA-256: d650e62f8e9123c4fbdc89910a8f445932c15139fcb6abaff80a613b4929b6c6
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://crophysi.ru/strik?utm_term=how+many+calories+are+in+a+cup+of+sweet+potato+souffle PDF link annotation
    • http://swiss-gear-top.xyz/land_rover_defender_parts_manualeh1dg.pdfIn PDF document text
    • http://wubarikenokepi.iblogger.org/rejodokuwufasikaxenezujo.pdfIn PDF document text
    • http://wozonos.22web.org/see_beneath_your_beautiful_piano_sheet_music.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://moneymaya.site/lofiderimukusenewarazesivf0e1.pdfIn PDF document text
    • http://soinjaga.ru/acurite_wireless_thermometer_with_humidityviqo0.pdfIn PDF document text
    • http://shimano-stradic.ru/ben_10_alien_force_in_tamildej8i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366336/normal_5ff23a0a5912c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417145/normal_603fbba8e1bbc.pdfIn PDF document text
    • http://mists.space/6645368962am9hb.pdfIn PDF document text
    • http://luminar4-download.xyz/lusters_comb_thru_texturizer_instructions3hgv2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451229/normal_601fe29e19468.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_6015d81085e2b.pdfIn PDF document text
    • http://usacreditscore.info/95159981664xf9jh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_603d37afc40bb.pdfIn PDF document text
    • http://uspehdnyaaxyz.xyz/gikumakooqymj.pdfIn PDF document text
    • http://openlait.pro/fabujegonozoruwafiwarez00i8z.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a12a05ab-6462-4855-b086-b0a2a961d6d8.filesusr.com/ugd/2c76f4_8151b79f0e84479eb3b66c7368088a56.pdf?index=trueIn PDF document text
    • http://zuvewago.epizy.com/xiraguzasaxokupezisowab.pdfIn PDF document text
    • https://7043ee2c-bc2d-4d46-b82c-b0075177c1aa.filesusr.com/ugd/f862b5_253aaf475bc44302a4700b062d242400.pdf?index=trueIn PDF document text
    • https://2e907eb7-0cdb-46e5-a4de-ff0e34d1b96e.filesusr.com/ugd/7ea2c5_aff0eb67c0314240bbe7843bd0b45711.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e95f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95F 5316 bytes
SHA-256: 93b8bcce337b32e662187f79e087033adba02526a0d86e31af586012d114d4f0
font_01_sfnt_off0000fb6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB6F 11336 bytes
SHA-256: 0f96293036a3866765b2fb21aa00aa9b08b17ed824e8245618ed951013bc96a7

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