Malicious PDF — malware analysis report

Static analysis result for SHA-256 814b56926c8a733e…

MALICIOUS

PDF

73.6 KB Created: 2021-03-29 19:19:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c91e013635c51c7487ebeabb98299bc7 SHA-1: 701383253e3e5633b4d446a177678a00e6d50a62 SHA-256: 814b56926c8a733e349cc647cb3f59933fecf6fa77eb42d90776f1d914169384
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 0.9989

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://xajibur.ru/wix?keyword=the+scarlet+ibis+worksheet PDF link annotation
    • https://kagoxikefo.weebly.com/uploads/1/3/4/6/134649289/426821d23fb.pdfIn PDF document text
    • http://alcozerox.com/super_jungle_world_runcq7zi.pdfIn PDF document text
    • https://bewepuxajijasi.weebly.com/uploads/1/3/4/3/134362307/8670488.pdfIn PDF document text
    • https://latezuletarok.weebly.com/uploads/1/3/5/2/135298634/fitapuvapik-lunupote-fixubiwemavame-bokepogipumileb.pdfIn PDF document text
    • http://8bitbeardsco.com/which_is_the_oldest_scripture_of_india1kbib.pdfIn PDF document text
    • https://lugonejiborin.weebly.com/uploads/1/3/5/3/135336075/kibidowizanoma.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448558/normal_60371e7a2a93e.pdfIn PDF document text
    • https://rawunixu.weebly.com/uploads/1/3/4/5/134527334/josad.pdfIn PDF document text
    • https://fumumakol.weebly.com/uploads/1/3/4/0/134017799/2961474.pdfIn PDF document text
    • http://chatik85939775.fun/how_to_clean_printer_head_epson_l120l7rft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_605aa3234e550.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_601127b4ba813.pdfIn PDF document text
    • https://revevapeseguv.weebly.com/uploads/1/3/5/3/135387876/5406969.pdfIn PDF document text
    • https://jajibesuwazigix.weebly.com/uploads/1/3/1/3/131383486/puvazipu-wixunumuloz-demewufawurof-woxug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393022/normal_604ce51959d5d.pdfIn PDF document text
    • https://nolobatunu.weebly.com/uploads/1/3/0/7/130740420/8037992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386839/normal_60251066e382f.pdfIn PDF document text
    • https://wikefazopikevi.weebly.com/uploads/1/3/4/7/134715570/tagugituno_vanatapawomive_kagirarugez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tomamujuf/episode_guide_the_good_place.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/vededorete.pdfIn PDF document text
    • https://s3.amazonaws.com/lijopavexanuse/23831953681.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/kuxujeriroke.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/chaka_chaka_bhaunri_film_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/ranupozuwikatumukub.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/kabir_singh_movie_counter_720p.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD514 4816 bytes
SHA-256: ff3cb01e6767776d860bef9198e63f9ae7d5b81e37cb69924d9adbd7d5bcd08e
font_01_sfnt_off0000e591.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE591 10304 bytes
SHA-256: 7e7d020795ac218d2d6af009f7b3ee7f3b5ec0aeda3f8c88c7e887cda6fc61c8
font_02_sfnt_off00010900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10900 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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