Malicious PDF — malware analysis report

Static analysis result for SHA-256 b3e004271e68e2ce…

MALICIOUS

PDF

73.3 KB Created: 2021-09-24 17:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: aa2241c5af3964397ab9ffbe97123520 SHA-1: 74d5acf1f53fbd518aff6952c419fce9e57cfa6f SHA-256: b3e004271e68e2ce4a9316e69af805d1f4a1ec5bce08573f25dfdcaf6de243b2
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, which is a common technique for executing malicious code. The heuristic 'PDF_RANDOM_URL_LINK' and 'PDF_SEO_DISPOSABLE_LINK_FARM' indicate that the PDF also contains multiple links to external, potentially malicious URLs. These elements suggest the PDF is designed to lure users into downloading further payloads or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://alhegazgroup.com/userfiles/file/25215954553.pdf
    • http://xn--jt2b56wn0ap2a.com/upload/file/202109130345428377.pdf
    • http://thessalonikiflights.com/files/files/jopexuz.pdf
    • http://ambulatorioveterinariovianello.eu/userfiles/files/51581411576.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/67ff8dc3186f01418cd21e886109c19b/32454440338.pdf
    • http://madonnina.info/userfiles/files/53645272576.pdf
    • http://ppogrimall.com/upload/editor_image/file/58475793266.pdf
    • http://studiotecnicopetrillo.eu/userfiles/files/muvafepawu.pdf
    • https://moraure.net/js/ckfinder/userfiles/files/95764997148.pdf
    • https://milliondollardesiclub.com/upload_files/featured/files/zadoruko.pdf
    • https://eetravel.net/file/gepukevuf.pdf
    • http://vaynhe.com/upload/files/zedawezukixukinize.pdf
    • http://kprmk.pl/userfiles/file/pixewipexurobop.pdf
    • http://asqcert.net/files/files/jixuwamuke.pdf
    • https://www.theoakshealthcare.com/my_content/js/ckfinder/userfiles/files/werudenugitebagerajali.pdf
    • http://xn--lv0az70cxar.tw/uploads/files/202109071825462870.pdf
    • https://nusantarabet4d1.com/contents/files/69630790858.pdf
    • https://betamachinery.sa/other_files/File/kifevenavexemakuw.pdf
    • http://szentdorottyapatika.hu/files/biroduvixojopuxemif.pdf
    • https://khotelmarket.com/FileData/ckfinder/files/20210914_24B301AC4D68F588.pdf
    • http://www.parinet.fi/tiedostot/files/43934007959.pdf
    • https://goodluckfishing.com/ckfinder/userfiles/files/74910162661.pdf
    • http://enidental.com/userfiles/file/20210904173345.pdf
    • https://termokingbt.com/ckfinder/userfiles/files/nununenizogewoz.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=how+to+get+dual+sim+mobile+number+in+android+programmatically
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b44a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB44A 16792 bytes
font_01_sfnt_off0000cc5c.bin
5e14f7689886f011791038839b5753ede591913d59cd108277a719b3bcaa676b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC5C 18160 bytes
font_02_sfnt_off0000fa96.bin
fb49fa8567035b1d0a836a0ea40a08ea117edfdfa5673f0dcadc902ce554af4c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA96 11288 bytes

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