Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e6ac90fd563cff…

MALICIOUS

PDF

95.8 KB Created: 2021-03-29 05:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fc1b1e3c185656590786edc934ccaf48 SHA-1: 4b476bb53142d94872a39bd36ca091d3ff763b15 SHA-256: e5e6ac90fd563cff1039d0ae57934edf1f76b31c936fd5806d96a26fd1745752
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for SEO spam or directing users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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 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.
  • 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://maypoin.ru/award?keyword=peptic+ulcer+perforation+pdf+%25E0%25B8%2584%25E0%25B8%25B7%25E0%25B8%25AD PDF link annotation
    • http://komunomaled.iblogger.org/akbar_birbal_story_in_kannada.pdfIn PDF document text
    • https://pixigakamorage.weebly.com/uploads/1/3/4/3/134351623/427dd08c.pdfIn PDF document text
    • http://lodujenoxo.iblogger.org/wirepenodiduxa.pdfIn PDF document text
    • https://kajugolake.weebly.com/uploads/1/3/0/9/130969904/2629957.pdfIn PDF document text
    • http://zutalinezar.iblogger.org/how_to_get_free_rp_lol_2020.pdfIn PDF document text
    • http://vugewanir.22web.org/acetylcysteine_davis.pdfIn PDF document text
    • https://nopiwevupemaro.weebly.com/uploads/1/3/4/6/134653234/2c423296aa.pdfIn PDF document text
    • https://jonaditogun.weebly.com/uploads/1/3/1/4/131408899/ea2169be9255.pdfIn PDF document text
    • https://zewadozodatigi.weebly.com/uploads/1/3/4/3/134337643/3727472.pdfIn PDF document text
    • http://www.opentle.orgIn 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
    • http://ratazudawi.epizy.com/12156380846.pdfIn PDF document text
    • http://fotubolore.epizy.com/easy_to_do_keto_diet_plan_for_beginners.pdfIn PDF document text
    • http://laxowukuwex.epizy.com/easy_anti_cheat.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/mijofe.pdfIn PDF document text
    • https://s3.amazonaws.com/fadupazageraf/how_to_decide_if_a_marriage_is_worth_saving.pdfIn PDF document text
    • http://napilidowolaro.rf.gd/kesotasejaripelegebi.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/bezur.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/latest_ada_guidelines_diabetes.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/momepanelenagud.pdfIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/99800670552.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/what_is_the_functional_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/savukojubusum/how_do_you_get_vr_for_ps4.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/waxus.pdfIn PDF document text
    • http://wemiwapava.epizy.com/black_platform_block_heel_booties.pdfIn PDF document text
    • https://s3.amazonaws.com/fogibi/wapurabit.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010cb4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10CB4 18264 bytes
SHA-256: 6534377de0601091ce7d16f3996a4dd23f64d54fd4022742b52a724d3cc4832f
font_00_sfnt_off0000ec3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3A 4856 bytes
SHA-256: 98eeb24b3bad1dfd4133f8c0d3583ea737151400f0649a411caab5c38cc37576
font_01_sfnt_off0000fcb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCB6 6180 bytes
SHA-256: 699a409af5455e9679ce95e5180ff5ca84b0167ce04e228ec7106e0465378370
font_03_sfnt_off00013daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DAF 9712 bytes
SHA-256: 34f6f50391dc2163ff38418d2e7816d1bfc6a0e04a779d87dce956f8bbbce8c1
font_04_sfnt_off00015ee2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EE2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

Open this report in the interactive analyzer, or submit your own file for analysis.