Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd4ca75dbaca902a…

MALICIOUS

PDF

69.1 KB Created: 2020-11-17 21:39:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d11c9ff349a052bfae0d13f33ae88801 SHA-1: e90dbef413addf0ef594c2e3eeddd326709ec15f SHA-256: bd4ca75dbaca902a0b39136bdd41c6e2549f4197acc56c68ccb85c1cc4ae1127
214 Risk Score
Tags
free-cdn-ebook-manual-lure

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 text related to 'Score hero hack apk download 2020', suggesting a lure for potentially unwanted software or phishing. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://gettraff.ru/123?utm_term=score+hero+hack+apk+download+2020 In PDF document text
    • https://pagejenaxupiwig.weebly.com/uploads/1/3/4/3/134383440/e5c8d55.pdfIn PDF document text
    • https://dixugoruvaweg.weebly.com/uploads/1/3/4/6/134616472/gumer-jowasudunuwi-desujafebarebok.pdfIn PDF document text
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/66a0e10898f2e.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/0c94b9059ed2.pdfIn PDF document text
    • https://tuxitusonodedin.weebly.com/uploads/1/3/0/8/130873989/bbacff07.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/66c2279e-9a52-43df-ab48-e3e1292d4bbd/kevaxaripokibosuvad.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/discovering_computers_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/labofadokilex.pdfIn PDF document text
    • https://s3.amazonaws.com/mesixadelomomo/wiroragaduwepamip.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxepiduded/flixel_cinemagraph_pro_for_windows_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zupenafud/westin_hotel_nashville_downtown.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/linear_demand_function_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/how_to_make_biogas_plant_at_home.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_off0000cd85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD85 5516 bytes
SHA-256: 208c3b315ae23c012d619d180db390af48666383ee5b99d6a584c6eaa9b2559d
font_01_sfnt_off0000e05a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE05A 13484 bytes
SHA-256: 7be2bd5d25b4cb4f7780681bcc6243640850b96b94dd1a58cda76e102866758e

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