PDF malware analysis — malicious · 6b1ea8ec9b255dee

MALICIOUS

PDF

88.5 KB Created: 2021-03-12 01:47:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: bc6a73825e2fed15d2b70222fe66bf75 SHA-1: 96d85a03489bd37588eb928cefd26e1d11786bf4 SHA-256: 6b1ea8ec9b255deeab8d7a6ddfc9be22094a632412dce8d08a1422919349feb9

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. 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 0.9989

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
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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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://soxebez.ru/wix?keyword=drunken+brute+pathfinder PDF link annotation
- http://xiruzox.mygamesonline.org/autolesion_libro.pdfIn PDF document text
- http://kofodotig.sportsontheweb.net/71807197255.pdfIn PDF document text
- http://niluwipewuxasa.medianewsonline.com/acute_and_chronic_heart_failure_pocket_guidelines.pdfIn PDF document text
- http://sevezor.scienceontheweb.net/how_to_say_yah_in_hebrew_audio.pdfIn PDF document text
- http://bajesiradevo.getenjoyment.net/hobby_lobby_black_and_white_buffalo_check_christmas_decor.pdfIn PDF document text
- http://medemukiduba.sportsontheweb.net/koperuxoresiwidijinikaru.pdfIn PDF document text
- http://witaxolexigabi.mywebcommunity.org/the_spectacular_now_pelcula_completa_en_espaol.pdfIn PDF document text
- http://wotidoteked.mywebcommunity.org/poxiwedesaganitu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.daltonmaag.com/In PDF document text
- https://uploads.strikinglycdn.com/files/f6af384d-878a-46f8-b143-8a62e4c7cb23/wadebojukewafome.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2830fa06-b81d-41cd-9a0c-c1d416e5eeb6/56048543736.pdfIn PDF document text
- https://a26b494c-4f54-4b9d-aaa3-e02d462d315a.filesusr.com/ugd/c6268f_efebfd19c4364e488e6cd6f38f5364a0.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/bitajemisajoz/socioeconomic_status_and_academic_performance.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2d75424f-5a9a-49fb-bed3-afa2dff4ec55/chess_puzzles_learning_app.pdfIn PDF document text
- https://c145ee04-3c3b-4786-8b94-e0511401b322.filesusr.com/ugd/de65f7_c5af049899394c1782ae7f4b24abf55d.pdf?index=trueIn PDF document text
- https://s3.amazonaws.com/kokesatodixon/sivoworobot.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/9b05d832-2756-41ad-92f5-ff75f1187c6b/95780056248.pdfIn PDF document text
- http://wuwedilejom.myartsonline.com/ball_bearing_calculation.pdfIn PDF document text
- https://s3.amazonaws.com/vezumobigodub/toefl_practice_test_grammar.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/219da266-c9d0-4010-acff-47d3336346d1/54007149239.pdfIn PDF document text
- https://s3.amazonaws.com/sajatofubote/sandeep_garg_accountancy_class_11_solutions.pdfIn PDF document text
- http://jimarol.myartsonline.com/rawid.pdfIn PDF document text
- https://s3.amazonaws.com/gajakelegeza/calibrate_gps_android.pdfIn PDF document text
- https://s3.amazonaws.com/juvuraguvutoxif/50274009057.pdfIn PDF document text
- https://s3.amazonaws.com/xufoxorog/bamujefo.pdfIn PDF document text
- https://s3.amazonaws.com/xufoxorog/98813613714.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00011244.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11244	4896 bytes
SHA-256: `df106414b37e7cbe489a7ab749197c62f5f12376ceebc095f9af622ecca3d002`
`font_01_sfnt_off000122d8.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x122D8	10504 bytes
SHA-256: `47b11ce1a85ec41ddf9bb62b178269b07a56e8483915608975c91ad306eee036`
`font_02_sfnt_off00014690.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14690	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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