Malicious PDF — malware analysis report

Static analysis result for SHA-256 45263bd8e835cbed…

MALICIOUS

PDF

79.6 KB Created: 2021-01-24 03:04:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7748c2858797296f2e964bf997708fba SHA-1: db7dbdc50cad86f725d84423ad73ac1726b01256 SHA-256: 45263bd8e835cbed746582441ab3e016e05f8f8f01cf2f757c9713aedd280aab
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many hosted on disposable domains, suggesting a link farm or phishing lure. The presence of 'utm_term=beginning bible study guides' in one URL indicates a potential social engineering pretext.

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 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://traffset.ru/aws?utm_term=beginning+bible+study+guides PDF link annotation
    • https://site-1175273.mozfiles.com/files/1175273/panuzukelajotepida.pdfIn PDF document text
    • https://site-1175198.mozfiles.com/files/1175198/exercise_powerpoint_template.pdfIn PDF document text
    • https://site-1168481.mozfiles.com/files/1168481/12519739020.pdfIn PDF document text
    • https://sovajavab.weebly.com/uploads/1/3/4/0/134041947/e4cccf57929ed0.pdfIn PDF document text
    • https://cdn.sqhk.co/dufubimaru/higggha/airplane_movie_online_with_subtitles.pdfIn PDF document text
    • https://site-1172173.mozfiles.com/files/1172173/geometry_dash_spider_challenge_on_scratch.pdfIn PDF document text
    • https://site-1176018.mozfiles.com/files/1176018/because_of_winn_dixie_full_book.pdfIn PDF document text
    • https://pevidutapare.weebly.com/uploads/1/3/0/7/130740538/a1a3a.pdfIn PDF document text
    • https://cdn.sqhk.co/lorotukogof/ijvtgiQ/lamborghini_driving_experience_los_angeles.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489052/normal_5ffe8c70cee3d.pdfIn PDF document text
    • https://xijafidul.weebly.com/uploads/1/3/2/3/132303061/7388587.pdfIn PDF document text
    • http://bojukekaj.66ghz.com/92111835386.pdfIn PDF document text
    • https://muwewixobajigu.weebly.com/uploads/1/3/4/3/134312624/75288e00049ec.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/lomiwexuva/raxuliwitano.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/aprilaire_model_500_manual.pdfIn PDF document text
    • http://kufalogomisag.epizy.com/how_to_get_fahes_inspection_report.pdfIn PDF document text
    • http://kasanuvuwa.epizy.com/balance_sheet_classification_interest_revenue.pdfIn PDF document text
    • https://s3.amazonaws.com/debamijizozexo/55973039317.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_off0000fcd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCD4 4980 bytes
SHA-256: e0a03bfbbaddc2b6bf0bafcfd3c6c909e03bc840cdbed5f5a3868015b6141d35
font_01_sfnt_off00010de1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DE1 10268 bytes
SHA-256: b498eab2dcd8929985aec129d70a3df2849298dd775332d7a204b7e511568ee2

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