Malicious PDF — malware analysis report

Static analysis result for SHA-256 60173daf7336c809…

MALICIOUS

PDF

77.4 KB Created: 2021-03-15 17:39:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 20a7ea7ae67e9c194a44ae4f5ff33fb6 SHA-1: 3daaea59e89d226d258f10fbae3b3e4dccf4ef4f SHA-256: 60173daf7336c809ce0d09e255fcdc1cf4fe721e8efad0f957174b351a1d2c3a
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by both ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a significant number of external links, identified as a 'PDF_SEO_LINK_FARM', suggesting a tactic to drive traffic to potentially malicious or deceptive websites. While no scripts were explicitly extracted, the presence of external URIs and the overall detection suggest it may leverage embedded JavaScript or other mechanisms to redirect users. The primary attack pattern observed is the creation of a link farm to direct users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://jottigo.ru/wix?keyword=murtagh+eragon+gif PDF link annotation
    • http://suzofovolavuk.scienceontheweb.net/44640110010.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/AvaAchc/35856926054.pdfIn PDF document text
    • https://cdn.sqhk.co/vakolitakap/uheNggy/retro_drive_in_movies_malahide.pdfIn PDF document text
    • https://lalovetesosa.weebly.com/uploads/1/3/4/7/134728341/2836028.pdfIn PDF document text
    • http://xazupadapafow.mypressonline.com/19461352812.pdfIn PDF document text
    • https://losiweso.weebly.com/uploads/1/3/1/3/131380476/loxub.pdfIn PDF document text
    • https://cdn.sqhk.co/vedanoderifu/gPjgahb/to_the_moon_and_back_lyrics_luke_bryan.pdfIn PDF document text
    • https://rabifitirigi.weebly.com/uploads/1/3/0/7/130739094/lenevozagutewu.pdfIn PDF document text
    • http://berasowugixo.mywebcommunity.org/dusove.pdfIn PDF document text
    • https://cdn.sqhk.co/jidelugob/aQgjjcM/vezudejil.pdfIn PDF document text
    • https://gazufapojekivu.weebly.com/uploads/1/3/4/8/134890592/e441f2e.pdfIn PDF document text
    • https://nonupipo.weebly.com/uploads/1/3/4/7/134767860/xomemope.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/zixemisad.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/runuzitexokol/atonement_2007_movie_free.pdfIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_375df2b8a96744bd934651ebb1735e94.pdf?index=trueIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_50379656b6474a11a36d6f1d994a5057.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/ignou_b._ed_convocation_form.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/ancient_greek_artifacts_for_sale_uk.pdfIn PDF document text
    • https://bf6af823-cb0d-4ee8-9d5b-4f0b1de5ed24.filesusr.com/ugd/9eb187_9892b5bd256e4ff0aa7bf32ac1b3fe68.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wukara/ocean_animal_coloring_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/3942337847.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_off0000f176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF176 4824 bytes
SHA-256: d2a72513ff01181c474d265c4627dfb85ecd0c08a43034c897871a91ce3d6989
font_01_sfnt_off000101e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101E8 11400 bytes
SHA-256: 4943c067a9bf4cbc281aebd241642c3b93b316a0f8e78e9c76a13f8232f592c0

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