Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ab901f2c1e8a5c6…

MALICIOUS

PDF

69.0 KB Created: 2021-03-02 12:55:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f7219c7d1adf58eef6c6066066bd1eb4 SHA-1: 506c4f3de1670c127cdadb3c522438d877168915 SHA-256: 1ab901f2c1e8a5c64f077cc4e1c67d6eb93361f27cb70c495835d0cd740ec87b
126 Risk Score

Malware Insights

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

The PDF contains numerous external URIs, many pointing to disposable hosting, suggesting a link farm designed to redirect users. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=hoffman+decanter+collectors+price+guide PDF link annotation
    • http://lijamerogavex.iblogger.org/power_book_2_episode_6_trailer.pdfIn PDF document text
    • https://cdn.sqhk.co/woxekivepi/fjeriaX/cricket_wireless_plans_with_hotspot.pdfIn PDF document text
    • http://xinuvaro.sportsontheweb.net/power_electronics_notes_free.pdfIn PDF document text
    • http://tetiviguxawik.getenjoyment.net/vizio_e420i-a0_screen_replacement.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/48452200542.pdfIn PDF document text
    • https://cdn.sqhk.co/bapinero/hgH5STy/leadership_skills_resume_examples.pdfIn PDF document text
    • http://wujejejifi.mygamesonline.org/elite_platinum_air_fryer_2.1_qt.pdfIn PDF document text
    • http://jizefuli.22web.org/wilufagepuxagowodo.pdfIn PDF document text
    • https://cdn.sqhk.co/xivomojuf/fjbjbic/salopejogivijanavezilol.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/tevomenil/94981081782.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/ky_courtnet_2.0.pdfIn PDF document text
    • http://wexejobi.rf.gd/76745516546.pdfIn PDF document text
    • http://zaxatuparogojix.epizy.com/97547287327.pdfIn PDF document text
    • http://tixixomevupot.rf.gd/27971432009.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/form_submit_button_outside_form.pdfIn PDF document text
    • http://bopexetosezulav.rf.gd/jaybird_x2_wireless_bluetooth_headphones.pdfIn PDF document text
    • http://taditemu.rf.gd/duchess_of_malfi_themes.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_off0000d00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD00A 5436 bytes
SHA-256: 5495d3ccbecd80edee13cca9c46af563541d37ac43e7e6b1742bf41ffa76b45a
font_01_sfnt_off0000e272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE272 10800 bytes
SHA-256: 52c0136221869409fd4511592a514db696e7cf4ed5c05844ec1d827cb481e47d

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