Malicious PDF — malware analysis report

Static analysis result for SHA-256 df6174cc5132eb1e…

MALICIOUS

PDF

53.9 KB Created: 2020-10-30 06:22:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 1872f01c6223cc15441d5b9119a0a81b SHA-1: a98718d050340caa47dfea6ae277e87a503541e2 SHA-256: df6174cc5132eb1ec25cd526a036ae567e20fc9fed7bdec28848362d39639895
162 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for downloading a 'Fl studio 11 manual'. The presence of a malicious redirector and the lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/123?keyword=fl+studio+11+manual In PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/3793514.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/264366fa-9370-45cb-b143-748c68a8e567/82609784609.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/que_es_asepsia_y_antisepsia_en_enfermeria.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/vagifenazunogirafijujobo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/098754fb-2e30-4fb6-a004-1171c89b45d6/biweginulipulodumasow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0476/5204/4966/files/hellforged_leviathan_dreadnought_points.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/bsc_agriculture_syllabus_icar.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/law_school_personal_statement_length_reddit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1661d762-7b0c-4783-b473-4074bc0f83f3/pabewabojodigo.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/zesenisopiku.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1d583b7-5a58-47ac-bbe7-ba28e9835106/dojogatajedonat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/9424/4008/files/angry_birds_go_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99fb9554-dc65-4d40-b880-0d3a7b64e7fa/9435190653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee01e8e2-5dbb-4f32-9092-20181d5df273/42688561386.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/fabizedesakubigoxuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59ba35d-db02-42cc-8a35-d47f1c18f9e6/tarizesawepopuzaw.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_off000093dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 4884 bytes
SHA-256: a6bd4714f13a5753074e679f6e3eb0a2db7438642da0a04bcf570f62d18d89b3
font_01_sfnt_off0000a465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA465 11276 bytes
SHA-256: fd89e0e3617d1c29a24d490534d079c0a545d91f6bd3e3db30149d52a4406400

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