Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc0083750c2f9742…

MALICIOUS

PDF

79.5 KB Created: 2021-03-13 20:51:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4a6f095a71d976d486f84dc085f9b46a SHA-1: 54ba5168ca7bc0bda2cdfba2354727a9d4ad4606 SHA-256: cc0083750c2f9742879e23be4fa791c29c6a509361cfe520e473185a5744022a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9993

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 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://botokaw.ru/123?utm_term=best+caller+name+announcer+android PDF link annotation
    • http://ekzo-fruit.ru/drawing_classes_for_adults_in_bangalore3oz05.pdfIn PDF document text
    • http://about-central.com/tuvovofusigulolomegg9uf.pdfIn PDF document text
    • http://sberbank.link/what_to_do_when_spray_paint_wont_spray88p5g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409255/normal_6016f594dd481.pdfIn PDF document text
    • http://firstsecu-paypal.com/39846458617kadu0.pdfIn PDF document text
    • http://gufutaca6.xyz/great_bend_loader_parts_manualwygkd.pdfIn PDF document text
    • http://opssmall.space/backstreet_boys_ages_nowqoxrq.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497348/normal_5fc9f5e619d6a.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/7383305299030ox5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422373/normal_5ff16ebf2993c.pdfIn PDF document text
    • http://reduslim-ordina.site/vusaletubefuwikitugol4qk8.pdfIn PDF document text
    • http://lalat.space/stanley_garage_door_bottom_seal_replacementy6h8t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_60298c1ceaf93.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/navoburarovada/burnishing_sheet_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/63868886767.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/camila_cabello_shawn_mendes_song.pdfIn PDF document text
    • https://6cb1c90e-07cf-4522-b85d-4edd8abc33c8.filesusr.com/ugd/0c41e7_478b140d196a4cd3b149b9d981d192e1.pdf?index=trueIn PDF document text
    • https://07bd7893-a6ec-44d5-90fe-c719e602c0bd.filesusr.com/ugd/aafaff_ec3a9b19250942d1b4ef181ffe211fd3.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/wozesapuxarumowefudasim.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/bully_math_3_answers_android.pdfIn PDF document text
    • https://s3.amazonaws.com/damerirazib/bach_fugue_c_minor.pdfIn PDF document text
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_9046636a4bd0479fb0bfc193e9d2579e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/co_op_games_for_couples_android.pdfIn PDF document text
    • https://s3.amazonaws.com/zumomasugipeno/90316602256.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/35193018088.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_off0000f924.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF924 5132 bytes
SHA-256: 5cbefb275fbcb1ff487558607b22ad451bd7bfa70152d58f9de1b4b5894649c0
font_01_sfnt_off00010a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7F 11112 bytes
SHA-256: 87d3f98fd770bd37fe8c8221b0c36a85605665bd31d20e7d89683fdb9273cd23

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