Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f17a326cc48d7cd…

MALICIOUS

PDF

98.5 KB Created: 2021-03-26 10:19:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4ab7144f6b709be0caf6ec8bad271fc4 SHA-1: 587c6279d03077fffa472dac678a8c6f471bf0fb SHA-256: 1f17a326cc48d7cd06a9249c51b4a1c996fb665886805be80f763d0059d4f108
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to potentially malicious domains, as indicated by the PDF_RANDOM_URL_LINK and PDF_SEO_LINK_FARM heuristics. ClamAV also detected the file as Pdf.Phishing.Trojan. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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://resalured.ru/123?utm_term=my+name+is+lavasioth+guide PDF link annotation
    • http://antonioit.fun/ragnarok_m_eternal_love_labyrinth_forest_guidep7mji.pdfIn PDF document text
    • https://tumulole.weebly.com/uploads/1/3/6/0/136054957/6589455.pdfIn PDF document text
    • https://siwevamad.weebly.com/uploads/1/3/1/8/131871433/wuritesujek_bovoximalapeki.pdfIn PDF document text
    • http://opensucre.pro/wopepuzuxuloripugw9jnu.pdfIn PDF document text
    • http://aov.one/la_tecia_thomas_weighthx5l4.pdfIn PDF document text
    • https://xidaxawefitorat.weebly.com/uploads/1/3/5/9/135958331/71681.pdfIn PDF document text
    • http://mizagoride.iblogger.org/consumer_cellular_doro_618_battery.pdfIn PDF document text
    • http://antinomi.design/wfc7500vw2_not_spinningcbzhq.pdfIn PDF document text
    • https://cdn.sqhk.co/wagomito/JhiFjcB/battleship_cove_fall_river_ma_hours.pdfIn PDF document text
    • https://cdn.sqhk.co/depivuni/ijFjb4Y/vidalajugerejes.pdfIn PDF document text
    • https://vulopinuvi.weebly.com/uploads/1/3/1/1/131164419/4628729.pdfIn PDF document text
    • http://privateguardingserviceagainstdanger.site/668701999445dta4.pdfIn PDF document text
    • https://fuvobavan.weebly.com/uploads/1/3/1/6/131637325/xusuz-winekavo-kizekon-xunotari.pdfIn PDF document text
    • https://mizugoveram.weebly.com/uploads/1/3/3/9/133986338/078942a4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jinabom/arundhati_telugu_movie_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/69560601357.pdfIn PDF document text
    • http://voferumupisefag.rf.gd/gedalisivoxijileb.pdfIn PDF document text
    • https://s3.amazonaws.com/kotenu/android_browser_apps_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/how_do_i_share_someone_elses_picture_on_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/guitar_chord_progressions_for_beginners.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14536 5308 bytes
SHA-256: a2d786b268751f3a9b659744c5dfa3fc7c1b222a4aa9e73dde2c817deb3d370d
font_01_sfnt_off0001573c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1573C 10880 bytes
SHA-256: 77e3185ad1e474d61336b45dcaf5cfeff1a988894e37efc323eace1ad1054ba5

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