Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d19502ef0b336e9…

MALICIOUS

PDF

80.3 KB Created: 2021-03-16 06:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d706025259ba91fa98b2a2e773337b9e SHA-1: 9b0cd62e21fbd9cd14f10b362d03ae33a11c2727 SHA-256: 0d19502ef0b336e9c8ad9dd208911e7f9b4d9477a9a6b8994251fc60a27440aa
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by 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 4

  • 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://baarspo.ru/aws?utm_term=roku+tv+reviews+2020 PDF link annotation
    • http://gamedv.design/from_the_history_of_cognitive_psychology_what_led_to_its_developmentmdhzn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460076/normal_5ffa9d9cb9124.pdfIn PDF document text
    • http://kidufamipowanot.mywebcommunity.org/4460417657.pdfIn PDF document text
    • http://natur-bio.space/backbeat_fit_3100_spare_charging_case0bkqp.pdfIn PDF document text
    • https://bokonuso.weebly.com/uploads/1/3/4/6/134604328/7e7b016b6acf.pdfIn PDF document text
    • http://paxezot.getenjoyment.net/faxegitujora.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454967/normal_602b8965eb8e8.pdfIn PDF document text
    • http://deemonatrafik.xyz/automatic_flight_control_system_helicopter61216.pdfIn PDF document text
    • http://apparentlyopt.com/278133513596ghhd.pdfIn PDF document text
    • http://clubstore.info/xokikejunisodubinaki2kym9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383574/normal_5fd3d96fa74f6.pdfIn PDF document text
    • https://rigivopamakor.weebly.com/uploads/1/3/4/8/134869382/sezerub.pdfIn PDF document text
    • https://zogudoweno.weebly.com/uploads/1/3/1/6/131637773/faviku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372985/normal_5fc8e1c08e99e.pdfIn PDF document text
    • http://mimawusavap.iblogger.org/adding_fractions_with_like_denominators_worksheet.pdfIn PDF document text
    • http://susobokilodos.iblogger.org/what_is_survival_of_the_fittest_in_natural_selection.pdfIn PDF document text
    • https://xoxomegu.weebly.com/uploads/1/3/4/7/134724284/netanodu.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://nixaruxabonijiw.rf.gd/8011524809.pdfIn PDF document text
    • http://zuxebalu.rf.gd/tosuzixaj.pdfIn PDF document text
    • https://s3.amazonaws.com/davawina/pair_bluetooth_headphones_with_sony_android_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/troy_bilt_pony_tiller_throttle_linkage.pdfIn PDF document text
    • http://tejugezefufuli.rf.gd/moromusomigumumedifi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF78 4708 bytes
SHA-256: bcc9ab1fd12f926ba91782047bf73db95f39571c6792bdbf54ff64095ac11f14
font_01_sfnt_off0000ffb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB4 11252 bytes
SHA-256: 9981a627ec4055625bf74f8d82395ee8963b097613e7b9deaa675f2c2cb7a467
font_02_sfnt_off000125ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125FF 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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