Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f4e79a45373171…

MALICIOUS

PDF

75.4 KB Created: 2021-03-18 10:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: a547a48e9b141f7fb18b9803e54d1ffb SHA-1: 16df07a600fc27a5b574f99c0bf3a52b73cfbd13 SHA-256: 07f4e79a45373171a11497c451a7c11dfc9d379d3bbc8960c7084db582c18b29
156 Risk Score

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. Specific URLs and indicators for this sample are listed in the indicators section.

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://jacksth.ru/123?utm_term=discord+apk+older+version PDF link annotation
    • http://zojulosopejozaz.iblogger.org/bindaas_bengali_movie_all_video_song.pdfIn PDF document text
    • http://mrshadow.net/the_trials_of_apollo_1_summaryryd4i.pdfIn PDF document text
    • http://impergamon.com/repawogboq3.pdfIn PDF document text
    • https://mafenipo.weebly.com/uploads/1/3/4/8/134879688/3264071b.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/metajov.pdfIn PDF document text
    • http://kino-vezde.ru/wexiledi1go62.pdfIn PDF document text
    • http://opensalon.xyz/mumagosidewibotaletiglg55j.pdfIn PDF document text
    • https://libexezelidod.weebly.com/uploads/1/3/1/4/131454359/b8cbc51ff0.pdfIn PDF document text
    • https://duzigolanulemo.weebly.com/uploads/1/3/2/6/132680867/8477154.pdfIn PDF document text
    • http://floradoma.net/959199523870nypq.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/ginutu/gewenotaluzobi.pdfIn PDF document text
    • https://s3.amazonaws.com/xeruxaxer/gujarat_express_platform_no_at_vadodara.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/chrome_linux_redhat.pdfIn PDF document text
    • https://47ab6ce1-aee6-4086-a8e7-31fe393d2411.filesusr.com/ugd/afbef4_d7a2d3d1ef7744dc9ff445e8ed7c9cd0.pdf?index=trueIn PDF document text
    • https://0d3c4653-ec4b-4b04-9c20-59e348ba858e.filesusr.com/ugd/62200f_d45256a81a2e4ea48ec8747df05e00a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/an_introduction_to_mechanics_d._kleppner_r.j._kolenkow.pdfIn PDF document text
    • https://e0eedba4-cf99-4c42-97f5-d3f9ae5832dd.filesusr.com/ugd/e36ea7_db861600e1814c45ac09670038bd5f6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jopomodilamego/income_guidelines_for_pregnancy_medicaid_in_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/51641762155.pdfIn PDF document text
    • https://s3.amazonaws.com/bidurudilidujug/dimensions_for_parallel_parking_test_in_georgia.pdfIn PDF document text
    • http://jonukufazok.rf.gd/vufojukuwukiwirip.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/xemobumu.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_off0000e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE536 5188 bytes
SHA-256: 67bc88f5aadd30a0b55cd63de9248f0d21e5e55829585095d8841be09faa942e
font_01_sfnt_off0000f6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F9 11668 bytes
SHA-256: b47d17effcd36557e887303b73ee0ee561bd853d02b697ad158eb02f8091be83

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