Malicious PDF — malware analysis report

Static analysis result for SHA-256 1900111cd9bff480…

MALICIOUS

PDF

73.0 KB Created: 2021-03-15 13:13:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7fb2c7df00ef627ddfbb246f2d95d77d SHA-1: 59c22df15dd20cfb78d7b0b3516d94b7b1360fd4 SHA-256: 1900111cd9bff480500c678931ebddb4dd17e9cf19221215c83a578e88613f49
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 0.9996

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://nipisod.ru/wix?keyword=casio+dg-20+guitar+synth+midi+controller PDF link annotation
    • http://policyhelpcenter.com/wiat_ii_standard_score_descriptorsqibl8.pdfIn PDF document text
    • http://forovasax.medianewsonline.com/32809843651.pdfIn PDF document text
    • http://1xbets-reg.site/19396128420ce8b3.pdfIn PDF document text
    • http://bamefidev.mygamesonline.org/rukaj.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/91566491838.pdfIn PDF document text
    • http://golijipux.iblogger.org/fisher_price_rock_n_play_sleeper_replacement_pad.pdfIn PDF document text
    • http://busijizi.medianewsonline.com/kafibevigalulodujovumim.pdfIn PDF document text
    • https://cdn.sqhk.co/zopizote/dAghXpk/guzegezevigelujazes.pdfIn PDF document text
    • https://cdn.sqhk.co/nawakema/HijhiGO/wogekipovanudisosi.pdfIn PDF document text
    • http://zodoworusa.22web.org/does_acetic_acid_smell_like_vinegar.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/hihfics/polutaberow.pdfIn PDF document text
    • http://itmax.info/snapper_spx_riding_mower_reviewssnlz3.pdfIn PDF document text
    • http://bupro.asia/54484186436ekj3w.pdfIn PDF document text
    • https://cdn.sqhk.co/gixelotopa/ANRhi1x/mavasepozomalupezarof.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/lunojol/julipagubofi.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/emulator_ps3_untuk_laptop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830309fd-370c-4ca4-b6d8-b388abe5a8ed/bunugukokinevupal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e28a180-67cb-4fd8-9074-f6739b28f5bb/amazon_uk_lonely_planet_books.pdfIn PDF document text
    • http://guxonijelosaku.epizy.com/51391229344.pdfIn PDF document text
    • https://s3.amazonaws.com/padanivozeb/bamuw.pdfIn PDF document text
    • http://vikomalagojuv.epizy.com/how_much_is_the_adoption_fee_at_cats_protection.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f9cb510-23b3-4be1-968f-f9034bec36f5/bujesobijuvire.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_off0000dc0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0B 5668 bytes
SHA-256: 6cbec3215d0958265be8119f71cd9d051809b0f554e98b042b019eaa4cc081e5
font_01_sfnt_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 10992 bytes
SHA-256: db1c8983bda277bdd2c417b505d6432b3702ecf0d8df4e78257d1478c490cea5

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