Malicious PDF — malware analysis report

Static analysis result for SHA-256 1498b14102938e04…

MALICIOUS

PDF

90.2 KB Created: 2021-03-20 22:54:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a16810e80c0de62556a74c032431488 SHA-1: 6766d161b28ee14f49c76f8d41bccad626da3459 SHA-256: 1498b14102938e042e0fb4b502c21d1eeb0afe138cd58489b808d30b696331f8
196 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of an advance-fee scam, containing language related to lotteries, prizes, and parcel delivery. It includes a mass of external links, with the primary malicious URL being https://seumenha.ru/strik?utm_term=what+does+the+handmaid%2527s+tale+mean, likely serving as a lure to a phishing or scam site. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://seumenha.ru/strik?utm_term=what+does+the+handmaid%2527s+tale+mean
    • https://static.s123-cdn-static.com/uploads/4388422/normal_600903e335d9c.pdf
    • https://dutizadip.weebly.com/uploads/1/3/4/8/134889078/pebax-lonotofozufopi-zazesasivudagub-winalotolabixop.pdf
    • http://rejemezurufoveg.mywebcommunity.org/information_technology_degree_online_reddit.pdf
    • https://zumugewij.weebly.com/uploads/1/3/1/4/131483128/sakawijopivo-pedajazipi.pdf
    • http://milatepe.medianewsonline.com/chromate_conversion_coating_process.pdf
    • https://static.s123-cdn-static.com/uploads/4465709/normal_5fdf8a0d12f72.pdf
    • https://static.s123-cdn-static.com/uploads/4470029/normal_6005d176a02c0.pdf
    • https://pobanuritixejun.weebly.com/uploads/1/3/4/6/134601578/d0dd76167f28942.pdf
    • http://tunulawofu.iblogger.org/jusezenelajanavafivoduxu.pdf
    • https://sudejewakigalo.weebly.com/uploads/1/3/4/0/134040490/7051776.pdf
    • https://cdn-cms.f-static.net/uploads/4485822/normal_5fdc85e4ec8cc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/9d3493c7-f59c-48cd-a2fa-b7c3e99f2e06/ponobajona.pdf
    • https://uploads.strikinglycdn.com/files/b5977ac4-4642-47d3-b31c-437c3299b26f/73761466643.pdf
    • https://uploads.strikinglycdn.com/files/8c775c92-3000-4b23-bfc7-c9390cc95d25/how_to_write_a_profile_interview.pdf
    • http://nopexuwub.rf.gd/62542354317.pdf
    • https://uploads.strikinglycdn.com/files/cef8ea2e-28a5-48c7-a33d-bcebfd85e310/fejoxeditasamuzupo.pdf
    • https://uploads.strikinglycdn.com/files/f3a0424c-6ace-4b3c-aeaa-310fe179ede6/regapileloposedopekipa.pdf
    • https://uploads.strikinglycdn.com/files/f65e5bd1-ad4c-4c3a-adf2-33bfe09cdacd/should_covid-19_be_written_in_all_caps.pdf
    • https://uploads.strikinglycdn.com/files/e3fe4ccf-99f0-4fd9-9186-9fba830494c9/brother_hl-2240_printer_toner_light_stays_on.pdf
    • http://vusurides.rf.gd/renoxugojurer.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011307.bin
1387d631765b95ef363f71c9c075062399d38384f75af92fbaf6d373743c90fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11307 4804 bytes
font_01_sfnt_off0001233b.bin
040d4949d9b87ef0288784bff4f5106b5ee6dbf32fb6b98dedc8f4bb38c781d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1233B 11844 bytes
font_02_sfnt_off00014bae.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14BAE 4324 bytes

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