Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec80678f455af36…

MALICIOUS

PDF

76.3 KB Created: 2021-03-15 06:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 642ba447de7c344ec2397e41dcb5e93d SHA-1: 23d19f99416eb6a2a86694fcddab78bd60c19567 SHA-256: bec80678f455af36aebc96e7c17dd50821a7399a89217fe855c6a922208e6e9b
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://xezojetit.ru/award?keyword=andhra+pradesh+government+holidays+2020+pdf PDF link annotation
    • https://komiwafaka.weebly.com/uploads/1/3/2/7/132712661/bovesigi.pdfIn PDF document text
    • https://rexaririwe.weebly.com/uploads/1/3/1/6/131637114/dasusupe.pdfIn PDF document text
    • http://sawemawe.mywebcommunity.org/51455239058.pdfIn PDF document text
    • https://rofewonopanofav.weebly.com/uploads/1/3/5/3/135312507/tikituxasis.pdfIn PDF document text
    • http://lemujivowukita.22web.org/3723117400.pdfIn PDF document text
    • https://kezeminitiwo.weebly.com/uploads/1/3/4/4/134476020/wapudujuwiluwij.pdfIn PDF document text
    • http://lipenav.mypressonline.com/kibajumezajimigefifigizow.pdfIn PDF document text
    • https://wuvobarapupi.weebly.com/uploads/1/3/0/8/130813490/8004771.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/be398755-1f6e-45e5-86bd-70203c194f61/vanuvuzoforupekavafav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87d24bb7-a39d-448b-b337-28a4a23b1d0d/rancilio_silvia_cleaning_descaling.pdfIn PDF document text
    • https://48b7024d-7414-4593-b44d-ed892b96ad15.filesusr.com/ugd/3e5db3_dab2b8ac4f1a4503a0f8aa6327c8363a.pdf?index=trueIn PDF document text
    • http://boxemoje.epizy.com/tadufoxumom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bc6be45-d7c6-4ed1-a2e4-a7ae943528a8/52679533141.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df175b70-cd3b-42ff-9b20-76405d36a90f/derolefo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da2da255-074f-4b58-8bbb-55c17bed0ebe/kohler_generator_parts_by_serial_number.pdfIn PDF document text
    • http://zivigujuvove.rf.gd/animals_tamil_movies_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ce14710-3955-405c-bbfa-2f7e4e4c616c/vajebikapebuk.pdfIn PDF document text
    • https://7b9449e5-51e9-4a7e-81f5-8587c42320f9.filesusr.com/ugd/571bad_40494b2a37c547a285d1601b003060af.pdf?index=trueIn 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_off0000ec12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC12 5880 bytes
SHA-256: b0aea0461fca1bb1f9e6577ce9e4f295ca9ec9f7ea1c16a47dd2266070784f34
font_01_sfnt_off0000fffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFFB 10560 bytes
SHA-256: 0f5ee683a1dc57e960a72cb3be2cdfe0214f6a122f8a6d46645c8a41e0039ec2

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