Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeade1e63ddd32d2…

MALICIOUS

PDF

73.9 KB Created: 2021-03-29 12:33:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 447fed75a3920597ee63d133ebbd5efb SHA-1: 7ad769b142e848fb93f58bbb6dab603de8d5d785 SHA-256: aeade1e63ddd32d278d64283ce8eeb24212c99bfb09faaea7052b5da3ca872cd
244 Risk Score

Malware Insights

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

This PDF file was flagged by multiple critical heuristics as malicious, including a link to known malicious redirector infrastructure and a large link farm hosted on disposable domains. The embedded URLs suggest an attempt to redirect users to potentially harmful content, likely for phishing or malware distribution. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • 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://crophysi.ru/strik?utm_term=vintage+guitar+price+guide+2018 In PDF document text
    • https://jamakebowixon.weebly.com/uploads/1/3/4/4/134477175/1762441.pdfIn PDF document text
    • https://jexetapi.weebly.com/uploads/1/3/4/3/134345775/57b521681a.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/7019518.pdfIn PDF document text
    • https://kivalake.weebly.com/uploads/1/3/4/8/134885121/danonewesin.pdfIn PDF document text
    • https://netigiru.weebly.com/uploads/1/3/4/5/134501210/9347767.pdfIn PDF document text
    • https://faniruwesil.weebly.com/uploads/1/3/5/9/135993686/1f5c2.pdfIn PDF document text
    • https://cdn.sqhk.co/fakosopalo/fugdhfr/67390168243.pdfIn PDF document text
    • https://cdn.sqhk.co/xafogatok/jYszdbv/religion_in_japanese_culture.pdfIn PDF document text
    • https://cdn.sqhk.co/xufuwejaxe/hdaCRii/fokidajuwagalegoka.pdfIn PDF document text
    • https://cdn.sqhk.co/lewoxiguj/Mhj8No5/59442240753.pdfIn PDF document text
    • https://vixufavem.weebly.com/uploads/1/3/2/6/132683014/19fefc28f558b.pdfIn PDF document text
    • https://lepopitiw.weebly.com/uploads/1/3/4/7/134762721/3022022.pdfIn PDF document text
    • https://febumade.weebly.com/uploads/1/3/4/7/134757335/feger-titufoxu.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/7500dae5-ead5-405c-ac22-0913d1ebb446/how_do_you_reset_the_defrost_timer_on_a_whirlpool_refrigerator.pdfIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_afdf76a2c1674e1fa5994537fb87b431.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/076021c2-8ba8-4f91-9355-bb021be5ba60/arbys_nutrition_information_sliders.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04d3e439-5615-47c9-a3cc-051f2bb9d4a5/41015224950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01e3c21b-290b-446c-b752-362353746c0b/nonali.pdfIn PDF document text
    • https://6ada6c45-9e8d-4063-9633-40b9e375d9b0.filesusr.com/ugd/9a7afa_9bb3087fb42842418259f868b61e866a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d772660e-1ada-4182-b2d1-d2c0bc9d33fd/how_to_apply_dye_on_short_hair.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_off0000e1ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FF 5516 bytes
SHA-256: 363047cdc4e1da9a4bd5ca3355f121940bbd3bd578c44330e44cd9ab4de5d039
font_01_sfnt_off0000f4d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D6 10940 bytes
SHA-256: b96ccfdfe23f913bf21ec9344c4f4cc6f194dadced460bdff088e52e53ecf30e