Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1615059468e1e4a…

MALICIOUS

PDF

44.4 KB Created: 2020-11-02 05:57:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 29349de1f182fa1b8661c575d6771e0a SHA-1: d5079383def77271ad649c9fe82f48c6ba26469c SHA-256: b1615059468e1e4ac398bac8467172de494541b613e98b35b97a25e731e9140a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?keyword=dryer+fuse+location In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/2723186.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f9dac3fa26ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374364/normal_5f9430c6ef214.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5f891c9670d1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387218/normal_5f9304442bed3.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://s3.amazonaws.com/vexosafugunu/download_picasa_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/suzeduselu/8750898209.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/17171435407.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/nds_emu_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/97815186293.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/assessment_center_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0469/8534/files/aircrack_ng_android_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0505/7996/4072/files/fiselawilapijinofuzur.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/bncc_ensino_fundamental.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6647/2631/files/36380576321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/2808/4384/files/vaporesso_revenger_220w_tc_instructions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3859/5012/files/75345394280.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_off00006334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6334 4860 bytes
SHA-256: d41af0b05e6dd62f2c0c33c135e988afca08c66bdd7757567415eef0ce3b96f5
font_01_sfnt_off000073ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73CE 10360 bytes
SHA-256: 8440d7becfa79e9ebf1bf2fa7833032a8192fcff5d6e10ecb8062e29429efda7
font_02_sfnt_off00009633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9633 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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