Malicious PDF — malware analysis report

Static analysis result for SHA-256 c601977868391075…

MALICIOUS

PDF

73.4 KB Created: 2021-03-22 14:42:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 875b03ea99791723cade10834acfb0a3 SHA-1: 5ea38dfe43d712f97bb94c7be0cb723e106e4bd7 SHA-256: c601977868391075f74d41f800615e236be67b23a4663e847765d0adec7f860a
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 0.9998

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 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://soxebez.ru/strik?utm_term=what+does+a+warehouse+specialist+do PDF link annotation
    • https://pudorexejuvaw.weebly.com/uploads/1/3/1/4/131455832/getemutegusuvup_nomefibid_napab_mepuwakumo.pdfIn PDF document text
    • https://vajizekof.weebly.com/uploads/1/3/4/5/134594154/4429185.pdfIn PDF document text
    • https://watogovujun.weebly.com/uploads/1/3/4/6/134626060/97e0ed23452898e.pdfIn PDF document text
    • http://50offstore.info/super_8_plus_nes_emulatorthrya.pdfIn PDF document text
    • https://piwirajaluz.weebly.com/uploads/1/3/5/3/135312697/sawufef_renefava_xoneji_xejufa.pdfIn PDF document text
    • https://gabixolip.weebly.com/uploads/1/3/4/4/134492453/giwifirenu.pdfIn PDF document text
    • https://puwedogomep.weebly.com/uploads/1/3/1/3/131382223/difejivozema-rifuxijur-lokasesakuvuk-zevirevufuri.pdfIn PDF document text
    • https://lesopafewef.weebly.com/uploads/1/3/5/2/135293294/7914293.pdfIn PDF document text
    • http://yesitalia.fun/tenenogaxefovilunazaxefdg0tu.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/mokuwanibof/altrincham_college_sixth_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2690fd1-5894-4752-9c29-dc27c06ce555/which_of_the_following_statements_is_true_about_organizing_a_multinational_company.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e7c9700-49fe-4f68-abde-0265e5ef69ef/21331136470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f26a6955-66a6-4d24-8f44-1066748cc99b/how_to_calculate_weight_using_length_width_and_height.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/graveyard_keeper_guide_corpse.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/latitude_and_longitude_worksheets_free_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/87742480077.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/irregular_verbs_worksheets_for_third_grade.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_off0000e5da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5DA 5264 bytes
SHA-256: 3b8d446157581c5a5c78549b03dcc1f447cf1b4d65db92cd9e21844eebee8bff
font_01_sfnt_off0000f7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D1 9684 bytes
SHA-256: 9d32e94dd368cbf8b37bf3e5a20e1cc181ee37ac4f21b2c5a7dbdaf7fcebcaa0

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