PDF malware analysis — malicious · 9063348244479202

MALICIOUS

PDF

79.9 KB Created: 2021-03-29 15:03:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07

MD5: b2d917205629062bd23a7aad9a43137e SHA-1: d846c19276a858dcd193611a498497086e1e7398 SHA-256: 90633482444792023f88ac52b09a4237fd14519873eca50e0a0e4bff8cac0ef0

164 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of external links, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous external URLs point towards a malicious document designed to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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.
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://fokemale.ru/123?utm_term=homophones+activity+sheet+year+3 PDF link annotation
- https://wipezupogev.weebly.com/uploads/1/3/4/3/134307181/6e0ef885bfe5671.pdfIn PDF document text
- http://yogistika.space/367686325073uyma.pdfIn PDF document text
- http://getallcreditscores.info/4844316802x5tpp.pdfIn PDF document text
- https://sifuparara.weebly.com/uploads/1/3/4/3/134352995/mexesidawezuturugizi.pdfIn PDF document text
- http://meblik.su/44885388514qgs0p.pdfIn PDF document text
- https://maduvifodowemo.weebly.com/uploads/1/3/4/6/134692972/5569947.pdfIn PDF document text
- http://uorott.com/xisapurabigesixxsa7y.pdfIn PDF document text
- http://help-feedback-amzn3.xyz/aswb_masters_practice_testdie6e.pdfIn PDF document text
- https://kobuzonoge.weebly.com/uploads/1/3/1/4/131452837/5704167.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
- http://donewenota.epizy.com/pendekatan_metaphorical_thinking.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/614d3684-3271-4662-a516-7f69f544e097/delajiveratumukivovelode.pdfIn PDF document text
- https://s3.amazonaws.com/sosupejuxofedo/ar15_barrel_nut_dimensions.pdfIn PDF document text
- https://s3.amazonaws.com/legapatatezisa/56981268100.pdfIn PDF document text
- http://ziwezamo.epizy.com/87118206034.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1af701a2-7e19-4250-88a2-09ca425999d9/sat_prep_courses_cost.pdfIn PDF document text
- http://gedamodeges.epizy.com/wevipavapes.pdfIn PDF document text
- https://s3.amazonaws.com/pujirageg/monster_hunter_world_rare_endemic_life_guide.pdfIn PDF document text
- https://s3.amazonaws.com/jarawaxanivu/24559063512.pdfIn PDF document text
- https://s3.amazonaws.com/zatazewoz/best_android_phone_under_5000_rupees.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/abf642a4-bc9b-4c26-9dd6-8ac318b10833/what_is_written_in_the_lamb_book_of_life.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3e9483f6-63e3-4b50-bf41-0be1db6d3333/sat_physics_subject_test_download.pdfIn PDF document text
- https://s3.amazonaws.com/xeropizuwe/79322883912.pdfIn PDF document text
- https://s3.amazonaws.com/fenatagazise/54816410822.pdfIn PDF document text
- https://s3.amazonaws.com/garorowa/free_bootstrap_4_template_for_business.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_off0000ee03.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE03	5216 bytes
SHA-256: `36ba6a4773e3d38215486339a8ea831f791effaf81efc488650c80b154ff2bed`
`font_01_sfnt_off0000ff94.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFF94	10552 bytes
SHA-256: `f997256777737366ba263900f9ca2d6547b6ab655dbef525eadcddd7987a909e`
`font_02_sfnt_off0001239e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1239E	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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