Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e590fb078f4571…

MALICIOUS

PDF

67.6 KB Created: 2021-03-13 16:50:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 52c3595b8cac70d52fd6e5b0116c7f85 SHA-1: 26ff5c6c7444e569c19738aaf0570431f1b2bcc4 SHA-256: 70e590fb078f4571fd234fac84ed8449740f44f8ed25360aad5bcb14deea139b
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 0.8381

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://jumiwimov.ru/aws?utm_term=ranger%2527s+apprentice+pdf+book+12 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5ff96d2b9a88a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_603bd5a595de4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_603ab374155b6.pdfIn PDF document text
    • http://jaraxusej.iblogger.org/bwakila_video_mp4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471711/normal_5ff96f5560ffd.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/ribowexulo/graphing_exponential_functions_worksheet.pdfIn PDF document text
    • http://jebebubijegew.rf.gd/gobevelakibedenazasene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b7987b7-a323-4eb6-b85e-14d254decb48/weekly_weight_loss_tracker_template_instagram_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01cae410-2501-4f05-925b-6a8088c1bd0b/what_kind_of_intermolecular_forces_are_present_in_h2o.pdfIn PDF document text
    • http://wojodiguf.rf.gd/zakelofumu.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/is_linksys_n600_good_for_gaming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3301a6c3-565d-4346-86fa-961cf01d8254/pabetukuvavafalav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21cdaa97-bca3-49cf-82b5-305a6cf8fce4/54847141192.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaporam/86419961067.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9325d1fe-302c-4dc3-a65a-bdd10200a165/bidujejuwuwesi.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/58883882990.pdfIn PDF document text
    • http://judimavazamo.epizy.com/zte_z222_sim_card_size.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/natural_ways_to_pop_a_boil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1522fa6e-3132-43f8-a68a-541e275ec4ec/how_to_disassemble_a_whirlpool_oven.pdfIn PDF document text
    • http://pebejokepekizuz.rf.gd/corvette_c3_buyers_guide.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e83e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83E 5720 bytes
SHA-256: e54458b62de0b9c636f4d9f63e26f4ca699ae4ce6bea7157a5ff6b407b926b94

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