Malicious PDF — malware analysis report

Static analysis result for SHA-256 32e396c382d819c9…

MALICIOUS

PDF

76.4 KB Created: 2021-04-15 11:51:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: de601226206b6eec3bb9293436165e90 SHA-1: 5629146031084c3a34bc98f8a0ce43090d23b4f3 SHA-256: 32e396c382d819c9a88318c45ff953cae1324bec53363385cb2c9d74aff4b5f3
186 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 6

  • 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.
  • 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
  • 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://gimoguvi.ru/strik?utm_term=2011+honda+pilot+parts+manual PDF link annotation
    • https://cdn.sqhk.co/tejilunuf/lieLido/e_money_order_online_tracking.pdfIn PDF document text
    • https://cdn.sqhk.co/salobosemiv/jbge0jc/pasanaf.pdfIn PDF document text
    • https://mobofapewapo.weebly.com/uploads/1/3/5/3/135399527/lijoruk.pdfIn PDF document text
    • https://bovikobugekut.weebly.com/uploads/1/3/0/7/130775803/zesipoxepe.pdfIn PDF document text
    • https://jasugigikimodo.weebly.com/uploads/1/3/1/3/131383258/feponewolu.pdfIn PDF document text
    • https://cdn.sqhk.co/gomurabog/j2bawjd/64842152100.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/3de9e1.pdfIn PDF document text
    • https://kawikixefi.weebly.com/uploads/1/3/5/3/135388441/dexuxoxakajen.pdfIn PDF document text
    • https://mokomowu.weebly.com/uploads/1/3/5/9/135969792/1384198.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410674/normal_603ec7c1acc24.pdfIn PDF document text
    • https://wisolowiguwo.weebly.com/uploads/1/3/4/6/134630140/c23506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489994/normal_605b574e4df00.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/13d1ae55-8581-4347-afc6-47718e3ff7e6/one_year_bible_reading_plan_2021_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/2013_jeep_grand_cherokee_srt8_value.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84fdd6e0-5aa5-4788-8876-ea7651379d49/what_is_the_formula_for_volumetric_efficiency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4aff709-a1ec-4f27-b6b4-b55143b1b230/88198910308.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5457b9da-41fb-4a26-af09-b40ed3064497/9582085113.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/zip_forms_login_c._a._r._login.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_off0000ec62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC62 5432 bytes
SHA-256: f2927313a9ed470313634e6eed076ca6a1f28b4000bc8a396e90f0527fc9f4f1
font_01_sfnt_off0000feaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEAA 11096 bytes
SHA-256: 16cf70bc212febf76f4791e64640fcb62a20846f3036fd7bc9059df55554dd0f

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