Malicious PDF — malware analysis report

Static analysis result for SHA-256 176413ebaa547ff1…

MALICIOUS

PDF

102.0 KB Created: 2021-04-17 05:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 012a0d5d1ea503fe7acefa8d6c2a986c SHA-1: caa30538cfa366d4daf4dbe0e7a0262f52664d69 SHA-256: 176413ebaa547ff13286169833389e4e4c5b75ea39b24352075d8509a8eaafcc
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL pointing to a domain associated with malicious activity. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the document's structure is designed to host many links, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • 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://midufefew.ru/strik?utm_term=twilight+saga+eclipse+%25282010%2529 PDF link annotation
    • http://italia-doc.fun/are_hair_salons_safe_during_covidrq9tg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454046/normal_60407af88d7b9.pdfIn PDF document text
    • http://xibawolafubiz.getenjoyment.net/16980068251.pdfIn PDF document text
    • http://vonoxafaku.scienceontheweb.net/53249678445.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489251/normal_5ff9c7ad306da.pdfIn PDF document text
    • http://fortuneo-enligne.com/rainbow_fish_aquarium_sizex7q4r.pdfIn PDF document text
    • https://zekawumili.weebly.com/uploads/1/3/4/4/134403966/duzopubede_gosij.pdfIn PDF document text
    • https://pawonojureva.weebly.com/uploads/1/3/4/5/134522231/209338.pdfIn PDF document text
    • http://ryukzak.digital/mogitomasanarokofuvebid4jgn.pdfIn PDF document text
    • http://xeberul.mywebcommunity.org/consignas_adorno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_602c9c6d5fb43.pdfIn PDF document text
    • http://hydrofthol.space/apush_chapter_4_reading_guide_answersaxeaq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418587/normal_5fd0dd071f0a0.pdfIn PDF document text
    • http://rigalanolupibe.22web.org/33888007326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457604/normal_605c936cc48b3.pdfIn PDF document text
    • http://zuvalasit.mypressonline.com/bank_fast_preparation_book.pdfIn PDF document text
    • http://tadurarawi.mypressonline.com/19865127061.pdfIn PDF document text
    • https://kuzefezatuxiwa.weebly.com/uploads/1/3/4/8/134898449/doxidev.pdfIn PDF document text
    • https://latufuxi.weebly.com/uploads/1/3/1/1/131163666/8621399.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/66aa0c2f-3b35-4b77-a5d3-06b930f9a367/laxizagosimudamipabeti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4539c9f-5e8b-4ccc-abb5-06c3827bca2c/wovixulejijapitaz.pdfIn PDF document text
    • http://wenimawibi.epizy.com/44497535814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2131e8ec-a281-4b67-bbfd-1d10487f71f9/go_go_ultra_x_mobility_scooter_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3ee09b-67f5-4f86-836a-6db85c443c7a/laxulovolejagigogusatos.pdfIn PDF document text
    • http://gevitejivojo.rf.gd/on_baby_girl_song.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001205b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1205B 4372 bytes
SHA-256: 72cd8b3ab5931498695348e195508b6d82f988fbdc21a7d5eb2d39db452df9f7
font_01_sfnt_off00012fa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA3 5192 bytes
SHA-256: 06fc1505a52114ce1bdbff57aca4de4a3fbea2379e653ce3fb820e6638070d75
font_02_sfnt_off00014180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14180 10976 bytes
SHA-256: 1b502f086c84a7bb5ead355f013651d7f592d59b4bf840b81af161fb7b9cbd46
font_03_sfnt_off000166ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166CA 16108 bytes
SHA-256: a4a2e4617ec0623f76e56e039d7e1bbccb613eecad466cf0d825351465bdecb9
font_04_sfnt_off00017b99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17B99 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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