Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7480ce93b093e51…

MALICIOUS

PDF

71.2 KB Created: 2021-03-20 22:14:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3a880d55314897c5e93c1e5e0f01fd6f SHA-1: 7dedeaae50225519d1f513d04f2490f35b5a2bc1 SHA-256: e7480ce93b093e51094eb98863308af0b2baa79c9960383de9a09d3df7decc48
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9991

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://jacksth.ru/aws?utm_term=trimble+tsc3+manual+pdf PDF link annotation
    • http://tihefers.online/burelunejuxezumuvesv07l.pdfIn PDF document text
    • https://lafefetakizin.weebly.com/uploads/1/3/2/7/132712235/zizekarinex-wuwafar-joponowirafi.pdfIn PDF document text
    • https://sijokazodile.weebly.com/uploads/1/3/1/4/131454207/7c2d8.pdfIn PDF document text
    • https://sanokigoj.weebly.com/uploads/1/3/4/8/134863934/4493814.pdfIn PDF document text
    • https://vedefagam.weebly.com/uploads/1/3/0/8/130814874/rimenenimuweze.pdfIn PDF document text
    • https://salupoxegiras.weebly.com/uploads/1/3/5/9/135961269/jebor-faninovafaw.pdfIn PDF document text
    • https://gegoviboz.weebly.com/uploads/1/3/4/8/134876631/jewekibamelegu_vepuxevapizava.pdfIn PDF document text
    • https://nozubewow.weebly.com/uploads/1/3/1/1/131164313/gekilasavuraf.pdfIn PDF document text
    • http://meetcabinets.xyz/xsplit_full_crackarjmj.pdfIn PDF document text
    • http://tabikola.online/orbit_water_timer_model_27729av3wl.pdfIn PDF document text
    • http://kudretbozaci.com/durawamuwordusja.pdfIn PDF document text
    • https://rakulemiz.weebly.com/uploads/1/3/2/6/132682689/ledekam.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wubojupegija.rf.gd/free_blues_backing_tracks_s_guitar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6e3e749-b3e7-4779-84ca-9e759787bac8/lightning_thief_movie_rating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0945dc4c-9ed9-4973-88a6-a812ea62faab/how_would_you_describe_emersons_tone_in_this_essay.pdfIn PDF document text
    • https://s3.amazonaws.com/wogikokuzotaxa/ccleaner_portable_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/how_did_inferno_book_end.pdfIn PDF document text
    • https://s3.amazonaws.com/fovezewi/intermediate_english_grammar_exercises_with_answers.pdfIn PDF document text
    • http://gipapexof.rf.gd/72703797665.pdfIn PDF document text
    • http://porilebunenagu.rf.gd/f_b_service_management.pdfIn PDF document text
    • http://loxeputogojew.rf.gd/the_monkees_daydream_believer_lyrics_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/tumexidekaxexozijizowaza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ba5f9fc-545a-491d-b028-e0127bb81b17/waserutinu.pdfIn PDF document text
    • http://zekuvosaletum.rf.gd/lancelin_wa_weather_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/315827f2-6f4e-4bfc-8d62-8717ed17512f/whirlpool_wher25_reverse_osmosis_water_filtration_system_troubleshooting.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_off0000d848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD848 5552 bytes
SHA-256: 7feb59d24ab5707ac79afc50e784f8b2704e1631966342180634f7737fd82c06
font_01_sfnt_off0000eb09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB09 10696 bytes
SHA-256: 612e4a1ef20be5f1900798d66ea51ba037acf8a70df11eb80ec70e2ccfba1d76

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