Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7a5da91117f2d6e…

MALICIOUS

PDF

76.8 KB Created: 2021-04-17 00:59:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e98ce1cd9a54d9bb3bc7573cfa62c725 SHA-1: 106b081828a0107b02d20b5845045fd3249b87e3 SHA-256: e7a5da91117f2d6ee30f3efdd2cae747254e42a68feef17681fe55ac9c4d96cc
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 0.9997

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 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://soxebez.ru/strik?utm_term=reading+short+stories+for+grade+4+pdf PDF link annotation
    • http://visionnew.xyz/35816341761ksjjh.pdfIn PDF document text
    • http://rapisakaxo.66ghz.com/how_do_you_reset_canon_ink_cartridges.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391013/normal_5fc6539ca4c1b.pdfIn PDF document text
    • https://rifojiditesi.weebly.com/uploads/1/3/1/3/131379396/lutolawavawe.pdfIn PDF document text
    • http://bosaboro.22web.org/dell_latitude_e5470_specs.pdfIn PDF document text
    • https://lidimegofomizut.weebly.com/uploads/1/3/1/3/131380930/puledawu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488133/normal_605aa37cf185e.pdfIn PDF document text
    • http://detalives.22web.org/full_charge_capacity_battery_report.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369659/normal_602da351e1787.pdfIn PDF document text
    • http://vajogeboru.iblogger.org/maps._me_free_apk.pdfIn PDF document text
    • https://tonuvufew.weebly.com/uploads/1/3/1/4/131438708/d0485963e.pdfIn PDF document text
    • https://gugekomu.weebly.com/uploads/1/3/0/9/130969097/taxevowobemowuma.pdfIn PDF document text
    • http://rebituzugofebo.22web.org/wagisugalifipowa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_6033291d0e61e.pdfIn PDF document text
    • http://instofficial.online/how_many_lines_does_lady_macbeth_havepxwx3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://webomojewudel.epizy.com/manual_de_cooperativismo_y_economa_solidaria.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/43389891369.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/agresti_and_finlay_4th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/the_hound_of_the_baskervilles_1939_film.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/do_tomatoes_grow_all_year_round.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_off0000eebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEBC 5364 bytes
SHA-256: 4d0cee505ccaf3aeee81ffd5fab15833bcdf82e6ccbf2b460c887d262a380629
font_01_sfnt_off00010102.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10102 10992 bytes
SHA-256: b85983af026505755b4b54cde826f98709752c73f486fcd8da23ed27819186c4

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