Malicious PDF — malware analysis report

Static analysis result for SHA-256 909b93cfa43f27b3…

MALICIOUS

PDF

75.5 KB Created: 2021-03-19 18:03:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e704a21ede748185f18597e539f287bb SHA-1: e104928f38a9c1ec7d9cb6e87e11e8cda87a4ec3 SHA-256: 909b93cfa43f27b3588189568e2bf2a33a8efa336e046f3d35eb628d10a76094
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a significant number pointing to potentially malicious domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection and ML classifier also flag this file as malicious, specifically as a phishing trojan. While no scripts were directly extracted, the presence of embedded URIs and the overall structure suggest an attempt to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://bologen.ru/award?keyword=asp.+net+ajax+control+toolkit+tutorial+pdf
    • http://itverys.space/fuwososuraje4kvyy.pdf
    • http://bigno.space/popular_woodworking_magazinewqpqd.pdf
    • http://kudretbozaci.com/291079938067rg09.pdf
    • http://priz24.site/select_the_statements_below_that_are_true_for_light_wavess5pun.pdf
    • http://prosucre.pro/votupk9nuf.pdf
    • http://trujillostacoshop.com/excel_vba_find_last_row_in_specific_columna9fgx.pdf
    • http://nakidki-alkantara.xyz/zarixuniwoxa9wvgi.pdf
    • http://rankingcoach-apps.com/79571103280tnmoo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/d4c7cc59-fb99-4fe4-94a7-829126106b80/repair_jenn_air_gas_cooktop.pdf
    • https://uploads.strikinglycdn.com/files/b003f307-90e2-4b94-be48-2ab018e97db6/how_to_read_lausd_report_card.pdf
    • https://s3.amazonaws.com/gimisorixosu/22649914653.pdf
    • https://s3.amazonaws.com/nevovumowa/trigonometric_identities_for_class_10.pdf
    • https://s3.amazonaws.com/bufexa/books_online_for_free_to_read.pdf
    • https://s3.amazonaws.com/veraxawewib/swallowed_foreign_body_guidelines.pdf
    • https://uploads.strikinglycdn.com/files/6db821d8-ab74-461a-b62b-d7213020006b/tinafojewodoligiv.pdf
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_09bf4f81147c49339f08b2d164831e93.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3bc0dc23-6bc9-42cc-aab3-bda58d371f58/how_to_sync_harbor_breeze_fan_remote.pdf
    • https://uploads.strikinglycdn.com/files/d1469256-8ab1-4567-bc4f-73cb5c6cd743/vowulajanewavo.pdf
    • https://s3.amazonaws.com/werowibovezoje/how_to_spotify_app_on_macbook.pdf
    • https://s3.amazonaws.com/lazolu/abdominal_aortic_aneurysm_classification.pdf
    • https://s3.amazonaws.com/xewamejixolefaj/vopumuma.pdf
    • https://9cf5cc10-3c2e-4e30-ae6b-73ed7beed88a.filesusr.com/ugd/5c2b46_c6434ee0690f41848f86336a008964d5.pdf?index=true
    • https://7f3356c1-ec1f-498a-9d41-5b36c14d87b7.filesusr.com/ugd/98d33d_7f9b5e3e9b3c46ae84aadbc5b0280e75.pdf?index=true
    • https://0aa989e7-076c-475f-bc22-fff5ae310860.filesusr.com/ugd/b44be6_6aae26b2051d4b30bd7ea3b4ba3dad43.pdf?index=true
    • https://s3.amazonaws.com/zifozujiwi/famidezogekowa.pdf
    • https://7c9e9c40-2b96-4f88-8065-b5ff5e495659.filesusr.com/ugd/3bfcae_ccba4e14106e42058b8c017ea30f9272.pdf?index=true
    • https://s3.amazonaws.com/satudifin/2008_jeep_grand_cherokee_srt8_common_problems.pdf
    • 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://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd7e.bin
48cd143bf1b4ea9625be07e956462baa557ad8d42addc8c44e7bd2f1f1b01951		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD7E 5260 bytes
font_01_sfnt_off0000ef74.bin
1ea62f002821f61f3712306b459469daf682b7f6d080519d8694269e9edb7c8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF74 10096 bytes
font_02_sfnt_off000111e1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111E1 4324 bytes

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