Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d7570df12e5fc4…

MALICIOUS

PDF

86.1 KB Created: 2021-03-10 06:40:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ca9c8fcb2d68fa8cf1ce55241fdb9228 SHA-1: e7b3c67bd489d13b0615254f46e58968b5b93be2 SHA-256: e7d7570df12e5fc4304862ee7cfd1a813cceab671a15d9943c7c1aaefa9d4636
134 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a machine learning classifier and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an external URI pointing to a URL that appears to be part of a link farm, likely intended to host or redirect to malicious content. The document body, though heavily obfuscated, contains text related to a camera manual, suggesting a lure to trick users into downloading a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://ponafet.ru/wix?keyword=canon+rebel+t1i+manual PDF link annotation
    • http://makebugobiwuka.mypressonline.com/are_there_any_monster_high_movies_on_netflix.pdfIn PDF document text
    • http://konufij.22web.org/pabopimekakewolajegudutin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382406/normal_603667bfae081.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446026/normal_5feec10a66cbe.pdfIn PDF document text
    • http://rovanenafet.getenjoyment.net/tisufatat.pdfIn PDF document text
    • http://nuzabokazovuwa.iblogger.org/27627073495.pdfIn PDF document text
    • http://zimipamus.22web.org/fanorerogubimapetemopifu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379733/normal_5ff2b1d7c8bfb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/12eeb3eb-3fdb-4e89-ae0b-684d77ffe728/asus_m4a78t-e_bios_update.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0baf0583-e29a-441d-99cc-1c84bd74dbdf/javonusewe.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/hidrostatica_ejemplos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a295f46-5b6c-485d-848a-9090412882d7/what_the_difference_between_mode_median_and_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/moduxanakuri/mental_status_exam_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/89237533326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b24278e9-08ed-4afc-b5c0-b8b172f4d202/nail_salons_near_me_open_now_cheap.pdfIn PDF document text
    • http://pirarotuweze.rf.gd/30731302959.pdfIn PDF document text
    • http://zevovumulula.rf.gd/mutants_and_masterminds_character_builder_3e.pdfIn PDF document text
    • http://bodudubabafixe.rf.gd/1397271521.pdfIn PDF document text
    • http://dijiwag.epizy.com/91420187810.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/15874036423.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116BE 4748 bytes
SHA-256: 3fa222305eadf303ae500c1c4f69507c8aef4152f91bc078600a9da3d662c2d2
font_01_sfnt_off000126ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126CE 10752 bytes
SHA-256: 58c25289f9d80556785827f05bce4f0c8a8a877b97737d1bb0f0651b8295fab1

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