Malicious PDF — malware analysis report

Static analysis result for SHA-256 77c18124fe2729f2…

MALICIOUS

PDF

76.3 KB Created: 2021-03-16 01:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 569a0f357480c0f52f9cd84094719849 SHA-1: d324ac415230fbd032a5195dc71ecf611cf370ed SHA-256: 77c18124fe2729f2565059bb14e0984b433de392ac8b8af6649be24a89d27991
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution 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 0.7026

Heuristics 4

  • 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
  • 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://jottigo.ru/award?keyword=character+design+template+pdf PDF link annotation
    • http://muruxilirafet.iblogger.org/24130823498.pdfIn PDF document text
    • https://melinifijegor.weebly.com/uploads/1/3/4/2/134265386/eb9dfed7db.pdfIn PDF document text
    • http://setofexperience.site/safety_engineer_salary_in_south_africa4k0hq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414848/normal_60197400a53e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486971/normal_60348fb30e9e4.pdfIn PDF document text
    • https://jorobeperepi.weebly.com/uploads/1/3/1/8/131856290/4452624.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375708/normal_5ff515575a77e.pdfIn PDF document text
    • https://xexidizufom.weebly.com/uploads/1/3/4/5/134508107/5274426.pdfIn PDF document text
    • https://fawubanine.weebly.com/uploads/1/3/4/3/134321827/xuredexo-lefitidider.pdfIn PDF document text
    • https://zasosefudasu.weebly.com/uploads/1/3/1/8/131856937/4873307.pdfIn PDF document text
    • http://astrology-personal.online/playboy_magazines_the_collectors_and_dealers_price_and_identification_guidet4xbl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d42fec6-65ed-4cf6-a52b-fc05a4134f6c/how_do_i_reset_my_viper_alarm_after_changing_the_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/harry_potter_cookbook_recipes.pdfIn PDF document text
    • https://s3.amazonaws.com/gurowozenupifi/12771363177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c222070-5682-4899-b144-dee2b5d39972/5e_tomb_of_annihilation.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/73109028061.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48a6a00f-4ff9-4392-b90a-6decc02f2c4a/is_the_female_brain_rated_r.pdfIn PDF document text
    • http://mekigif.epizy.com/vaaste_video_song_album_mp4.pdfIn PDF document text
    • http://badozalusubafux.epizy.com/nice_looking_table_in_excel.pdfIn PDF document text
    • http://lozekav.epizy.com/banugodikasibavofudatebu.pdfIn PDF document text
    • http://furivel.rf.gd/new_htn_guidelines_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/988a2e59-7300-4a62-97fa-dd42edea0863/what_is_the_best_amazon_fba_course_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/fuvidokibet/vishnu_sahasranamam_path_in_gujarati_download.pdfIn PDF document text
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000f842.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF842 6784 bytes
SHA-256: 83770fb78e54eff24d4e8fc35167a9ca2794fb090fb5596f1f2bda1f97ce1e88
font_01_sfnt_off0001094d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1094D 3136 bytes
SHA-256: 95b8098a4042feaabcbc2eb97379a5d053fb975780bc29df41deb7d226d425c1
font_02_sfnt_off00011479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11479 5476 bytes
SHA-256: 633e6b0bdc3a65293d9a953d53ff749f209a652bcee2a1e88773fd1445e3e903

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