PDF malware analysis — malicious · c12ad56d67f25627

MALICIOUS

PDF

83.9 KB Created: 2021-03-16 08:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02

MD5: e7de212639badbe41852209ced7c20b6 SHA-1: c5f59ca18aacacf3e6c6e666546194d1468226a1 SHA-256: c12ad56d67f256278ca4cfa3dbf5868a9452be5fa2ec32c47ad87ad2ac579991

166 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. 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 0.9995

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
Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE

Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
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://golowaki.ru/strik?utm_term=2016+amc+12b+pdf PDF link annotation
- http://avit0.pro/ccs811_air_quality_sensor_datasheetk34j2.pdfIn PDF document text
- https://xedububedopo.weebly.com/uploads/1/3/0/7/130740082/4329754.pdfIn PDF document text
- http://tugrull.com/289459020651gt39.pdfIn PDF document text
- http://ital-tess.space/new_practical_chinese_readeruj2dk.pdfIn PDF document text
- https://lenapejasuma.weebly.com/uploads/1/3/4/7/134749539/6566577.pdfIn PDF document text
- http://ch-data-2a8fv9s.pw/oxo_chicken_stock_nutrition_information0dkk8.pdfIn PDF document text
- https://tezolusubugejel.weebly.com/uploads/1/3/5/3/135314563/zawijo.pdfIn PDF document text
- http://alteramaks.world/dell_optiplex_620_drivers_for_windows_xp8vkif.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/082307bb-edb3-49cc-bf41-77b3d3a8bf8a/jabaloredonavuwilav.pdfIn PDF document text
- https://s3.amazonaws.com/debamijizozexo/bezokokonefatimewaruxizat.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b6c50a4c-d0d6-475f-8589-65c672692b22/how_to_set_time_on_reizen_talking_clock.pdfIn PDF document text
- https://s3.amazonaws.com/lososimap/landing_page_psd_file_free.pdfIn PDF document text
- https://s3.amazonaws.com/masevewi/gizozinawapisedomadojoji.pdfIn PDF document text
- https://s3.amazonaws.com/jagux/dikifofepogojatowezixuda.pdfIn PDF document text
- https://s3.amazonaws.com/tezofuretejom/32694638210.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b35a853d-5baf-44df-b42e-f0a3130a01bf/fivuwubitubarevof.pdfIn PDF document text
- https://s3.amazonaws.com/kokesatodixon/rotewapofotivolej.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/28354c34-9169-45b2-86aa-9c9d4464fbf0/4003289655.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b207f9bf-f070-4a22-970e-a3a1c99083eb/is_king_james_the_most_accurate_bible.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2b87de05-319f-4d0e-af66-0f1357d0c222/4866572526.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/50d4dd73-0b7d-458b-9d97-83da70234582/cuanto_equivale_6_pulgadas_en_milimetros.pdfIn PDF document text
- https://s3.amazonaws.com/lixasifasi/88613916436.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_off0000f288.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF288	5040 bytes
SHA-256: `c6eb6fdad2373de53898cc8ab353358cebc5c22e3787d244fac3c2266c7f7d7b`
`font_01_sfnt_off00010404.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10404	5520 bytes
SHA-256: `79b8d5116e1f957eaaa54342a7e60d4d974a06716e4b7d845b1485833c53e1f5`
`font_02_sfnt_off000116b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x116B6	12584 bytes
SHA-256: `cf73fa1dfeec0fe1dfc06c9476d8871bdd568c04f62a9e25dd50297157dcdcff`

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