Malicious PDF — malware analysis report

Static analysis result for SHA-256 f94e247a46a5edde…

MALICIOUS

PDF

72.7 KB Created: 2021-02-20 15:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a5daaa828e9fea1e84c0966a87b9c094 SHA-1: ea15d25162dd537c256dd42051ca34adb63e82f5 SHA-256: f94e247a46a5eddec9ab6b9a13bd7a341e003ff358c28c9af10d5a0a4380f645
156 Risk Score

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 5

  • 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.
  • 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://seumenha.ru/aws?utm_term=how+to+become+a+wilderness+first+responder+instructor PDF link annotation
    • https://sezokifor.weebly.com/uploads/1/3/4/5/134596047/siditavo-depozeserujipip-tekimutavonexuj.pdfIn PDF document text
    • https://cdn.sqhk.co/nifodotiriru/j4jjUyH/bingo_dog_tv_show.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/Ehihfjj/rope_swing_chair_stand.pdfIn PDF document text
    • https://xomitemekebok.weebly.com/uploads/1/3/4/8/134881854/4a77ab.pdfIn PDF document text
    • https://famereruzune.weebly.com/uploads/1/3/1/6/131637342/migeximod-lasuxolifotafa.pdfIn PDF document text
    • http://kyukty68.xyz/bivemisedm6f78.pdfIn PDF document text
    • https://cdn.sqhk.co/figegixo/gdhhVjg/seasons_of_war_derek_landy_ebook.pdfIn PDF document text
    • https://cdn.sqhk.co/zodavujera/jSQXkN7/bridebook_the_wedding_planning_approach.pdfIn PDF document text
    • https://novunafa.weebly.com/uploads/1/3/1/3/131379228/f0593c4dde09.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/megujobemegor/ophthalmology_journal_author_information.pdfIn PDF document text
    • http://lobidirubegevil.epizy.com/st_banjara_dj_audio_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/29794739616.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/good_speed_for_netflix.pdfIn PDF document text
    • http://jebefufodapiwi.epizy.com/27114346721.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/delhi_police_charge_sheet_format.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/taxi_driving_games_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/malayalam_nursery_rhymes_lyrics_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/abhimanyu_kannada_full_movie.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC92 5492 bytes
SHA-256: 4195291925760e3d078e16798959852e8a6963fcb852e34bc5beceb65da9fca6
font_01_sfnt_off0000ef30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF30 11244 bytes
SHA-256: 89ec0f95f913e45b3b54a9bf0ce8082e9c0b6fb07d267ecf6f1471e04f1a34e0

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