Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7c1b2286540ea6…

MALICIOUS

PDF

73.5 KB Created: 2020-12-04 21:07:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: dcc7889e8a5283618ac68ea34352aaee SHA-1: 16b787007d1873ba863d670666bf0a69574a5736 SHA-256: ab7c1b2286540ea6469dfef6b019e5c7e5e05c677ff21dde44bdf115301bc1ad
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to known malicious redirector infrastructure. The heuristic firings indicate this PDF is designed as a link farm, likely to distribute malicious content or phish users. While no scripts were extracted, the presence of multiple external links suggests an attempt to lure the user to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=tea+tree+oil+genital+warts+experience In PDF document text
    • https://wekasekizoturir.weebly.com/uploads/1/3/4/1/134131482/tigazopunun.pdfIn PDF document text
    • https://wogilaxafa.weebly.com/uploads/1/3/4/4/134479860/nutaxitekemuwofir.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/9390877b.pdfIn PDF document text
    • https://dutofubexel.weebly.com/uploads/1/3/4/6/134631161/bikawirofop.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/17ca86b0-895e-4f11-b260-d5dfd4f9021d/putabepiwakevugelu.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/kodobimofunakusog.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/curriculum_template_for_childcare.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/general_lejeune_birthday_message.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10b9cab79f442f22a6952/t/5fc1c2f73f75b166431588cf/1606533880201/gujuxusigiparawiduzer.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/6439753919.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3b749ee0f32b871f4e24/1606302581986/2623188093.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a94d73-1246-44ad-be47-db66cdb5b8dd/52386109842.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd1e0c89e1c4b8fb81223/t/5fc4838c3f75b1664364df9c/1606714253186/victoria_crowned_pigeon_baby.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d57abd14ff0dd29c5223/t/5fc6b4f2ad3e6411922b38ab/1606857970648/31047409128.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/02_10_2020__45_days.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2816dc89-f0d9-4403-9e75-8c0f239f2f40/25191676582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da52d82c-77e2-4d08-8331-cfe3cde01aac/gamevorodokimejivekuso.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_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 5208 bytes
SHA-256: a7f784cddd3898682876c528081596f2879882555b6d0950ab5ffd09b0327b97
font_01_sfnt_off0000f3f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F3 11148 bytes
SHA-256: 77e8725d142045da1ffdf1804ebfea304c669a021303b9f610049ea8a2ec554c

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