Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e14ea4d7082946f…

MALICIOUS

PDF

79.8 KB Created: 2021-03-09 17:34:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 2e868ede3eb978019488fa3310e374c0 SHA-1: 23863b0f3b7348042d0cc4787bf021b6fe92e68e SHA-256: 8e14ea4d7082946f43382840baf087998c004d1c19351b06a92e24b343234a01
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous external URIs, including one that redirects via a UTM term, suggesting a lure to a malicious site. The document body, though heavily obfuscated, appears to reference a 'Honeywell rpls740b1008 manual', indicating a pretext for the malicious link. No scripts were extracted, but the presence of multiple external links and the high risk score suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://leonvi.ru/strik?utm_term=honeywell+rpls740b1008+manual PDF link annotation
    • http://nuxuzuruguli.mypressonline.com/59527826223.pdfIn PDF document text
    • http://smartcoin.design/mending_wall_questions_and_answerst4nxf.pdfIn PDF document text
    • http://safetymirrors.xyz/tadelepagifululugabalajed28yo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468289/normal_60460137e4228.pdfIn PDF document text
    • http://banki-internetowe.com/mitologia_griega_celta_y_romana_libro78vw4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470685/normal_60258dcd1a03a.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/when_is_shadow_and_bone_being_released_on_netflix.pdfIn PDF document text
    • http://tafugegajotu.mygamesonline.org/cisco_introduction_to_networks_chapter_3_exam.pdfIn PDF document text
    • http://peluxuba.sportsontheweb.net/netgear_n300_review_extender.pdfIn PDF document text
    • https://wiwetiforezopiv.weebly.com/uploads/1/3/2/6/132695432/komuwigem.pdfIn PDF document text
    • http://fezelegafefuv.mywebcommunity.org/locate_the_centroid_x_y_of_the_shaded_area_9-59.pdfIn PDF document text
    • http://mexicotop.xyz/mewekelunoguxofolexosasobkx2pc.pdfIn PDF document text
    • http://eurozone.pro/tonurigaguvinolunowutolerz6m3n.pdfIn PDF document text
    • http://digitalliteracyinstitute.com/56231339408qcghy.pdfIn PDF document text
    • https://torobekaxiwe.weebly.com/uploads/1/3/1/3/131380482/bupuf_sozuveranevum_xumimoked_xovulod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427273/normal_5fdc6afd5654b.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zonatitusajobo.onlinewebshop.net/5_minute_crafts_reality_vs_instagram.pdfIn PDF document text
    • http://gekolutewubel.myartsonline.com/36703672940.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.

FilenameKindSourceSize
font_00_sfnt_off0000ecbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECBD 2388 bytes
SHA-256: 9b707751075ee786b906fdd28dd29d92e07e10b044adeb74eefcdd5709952f98
font_01_sfnt_off0000f70e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF70E 5816 bytes
SHA-256: fff8b4bc551591c31cdee4025d2f864f5bf98a6c52bf316315177d094913046f
font_02_sfnt_off00010ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AE5 11424 bytes
SHA-256: 741e0bca92eece03b69e80c1d580c4ccca523ad81334ebef06c01f8d71d6accc

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