Malicious PDF — malware analysis report

Static analysis result for SHA-256 387207abbcab5c6f…

MALICIOUS

PDF

72.2 KB Created: 2021-03-14 16:16:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b2057a904ebcd106a304622a0f481fd4 SHA-1: 5b8a7c509185ca05aed7fdee9eb36dbcfbec59d2 SHA-256: 387207abbcab5c6f4e0e9320edbc3371632471ec9a5f462490269f7b7409f01a
134 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 ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/123?utm_term=my+talking+tom+hack++ios PDF link annotation
    • http://wugupomovupa.sportsontheweb.net/canterbury_tales_prologue_old_english.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/latest_news_on_indo_china_border_dispute.pdfIn PDF document text
    • https://cdn.sqhk.co/miropefaneka/dheghij/41734760265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374704/normal_60150dc281cd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408995/normal_603b7e8fbecbd.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/60438025611.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378606/normal_6003bcb206eb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454171/normal_5fec0710a2cd9.pdfIn PDF document text
    • http://xabudumame.mypressonline.com/neufert_anthropometry.pdfIn PDF document text
    • http://dotixomovi.sportsontheweb.net/canonical_correlation_analysis_tutorial.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501028/normal_602c578abc1a6.pdfIn PDF document text
    • https://cdn.sqhk.co/nesuxozajek/hhbhg4l/iowa_storm_2020_photos.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/94337042636.pdfIn PDF document text
    • https://cdn.sqhk.co/letonolomo/jdjaLgd/madaxowegabamofoge.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://19972ee8-34f0-4900-8009-9f590161cd02.filesusr.com/ugd/64db51_5a86e4dcd2774c159c9a00da8b73a702.pdf?index=trueIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/your_baby_s_first_year_week_by_week.pdfIn PDF document text
    • https://cc968bdf-8a18-4a65-a72d-893c706ef441.filesusr.com/ugd/bae363_0cb1791a062f4724aadee9d29dc6550c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dazawojob/weekly_chore_chart_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/widiligazakomibo.pdfIn PDF document text
    • http://wififeju.atwebpages.com/rokoxibeta.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/60792242108.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/someti.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA88 5288 bytes
SHA-256: b7e6360416a77b965319917f31b5b67a602fccc4839f6934f7e5cdb18a8c54dd
font_01_sfnt_off0000ec7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC7F 11452 bytes
SHA-256: 24290a429f6971489f7598db2fcb22414acf74ebd3e0eaf6c5c8666e0aac07d5

Open this report in the interactive analyzer, or submit your own file for analysis.