Malicious PDF — malware analysis report

Static analysis result for SHA-256 93223b0448bf640e…

MALICIOUS

PDF

48.7 KB Created: 2020-10-03 02:48:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7def2e7b0646b468685d957e5cd5805e SHA-1: f35612c681e72bcf409694c24061cebed9bcc826 SHA-256: 93223b0448bf640e103b98d714df7de97fc7087404f8331dbe577d9697279b6c
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a critical heuristic firing for a link to known malicious redirector infrastructure. Another critical heuristic indicates a PDF link farm, suggesting a large number of outbound links. The document body, though heavily obfuscated, contains a URL that matches one of the identified malicious links, indicating an attempt to redirect the user. No scripts were extracted, but the presence of malicious links points towards a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.club/pify?keyword=ethereal+plane+5e In PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/70803365803.pdfIn PDF document text
    • https://site-1036971.mozfiles.com/files/1036971/65478890949.pdfIn PDF document text
    • https://site-1039253.mozfiles.com/files/1039253/wugopiperadalilerugewi.pdfIn PDF document text
    • http://wonuxe.stoneofhopeyouth.org/uploads/1/3/0/7/130739640/mozesenigerelu_zenubozaba_dapakekapoluwot.pdfIn PDF document text
    • http://fesed.techwithdeb.com/uploads/1/3/1/4/131453013/b1d3148f1116.pdfIn PDF document text
    • http://files.mail.asifoundations.com/uploads/1/3/1/6/131636655/5325190.pdfIn 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
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/glencoe_algebra_2_test_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/energy_transformation_in_cells_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4620/2272/files/ranilopibuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0733/0464/files/97924860915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bc2ca84-b47f-43e1-9d4b-5454301763e8/zubereg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1b9c829-0bf6-4cde-ad1f-6d740ce4f560/58317285052.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007592.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7592 4440 bytes
SHA-256: 2bbdd96af263a76b4f9928c05d8cfcfbdcb383f80f7017a287afbc70f54c6a0c
font_01_sfnt_off0000848e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x848E 10328 bytes
SHA-256: 97123d8b1a590913730bd03353fa85430c784b1d6daf952583686d6f93913fd8
font_02_sfnt_off0000a7d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7D8 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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