Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7854dfe5acfaec…

MALICIOUS

PDF

77.7 KB Created: 2021-02-19 00:45:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6b8bb59cf1f9ca6fd3666dbebb185a7f SHA-1: 630f7c02e9156554e3de2a4582b78c62c175b93c SHA-256: 7f7854dfe5acfaec2b90b558558b2545fe4621611eaa341282a2c5221478615b
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The ML classifier and ClamAV also flagged this file as malicious, indicating a phishing or malicious redirection attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to harmful content.

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://yafferge.ru/strik?utm_term=how+to+lighten+a+room+without+windows In PDF document text
    • https://sibozigoguxo.weebly.com/uploads/1/3/0/9/130969143/12d2c2579228f6.pdfIn PDF document text
    • http://ledabojuvogo.22web.org/atomic_physics_short_definition.pdfIn PDF document text
    • https://cdn.sqhk.co/lepemafe/NXgciaa/pureruduzevonoradufojix.pdfIn PDF document text
    • https://melijavunibujov.weebly.com/uploads/1/3/0/8/130873932/wezobubirijudabig.pdfIn PDF document text
    • https://dipapira.weebly.com/uploads/1/3/4/6/134610741/c87cfd903d19a.pdfIn PDF document text
    • https://cdn.sqhk.co/movijomo/jb2nidn/figasubede.pdfIn PDF document text
    • http://luminar3-download.xyz/poboy_express_denham_springs_louisianab2ilm.pdfIn PDF document text
    • http://fusavexupisedi.iblogger.org/tupejudipexawisewuzikaki.pdfIn PDF document text
    • http://risiwivozival.iblogger.org/mupilobaverosazu.pdfIn PDF document text
    • http://gezawazerige.iblogger.org/speed_velocity_and_acceleration_worksheet_grade_9.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/ibgdxja/voice_of_darth_vader_new_hope.pdfIn PDF document text
    • http://mojuluxemo.22web.org/73918997272.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/IZAAXgc/13685363534.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/9161444864.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/enterprise_architecture_as_strategy_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/vancouver_canada_map.pdfIn PDF document text
    • http://jotavuwejopilo.rf.gd/bkash_kyc_app.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/salinugujolisomoxafuludav.pdfIn PDF document text
    • http://zovuzop.epizy.com/musapube.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_off0000f286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF286 5292 bytes
SHA-256: 810ead548d64de8144539c98adeb0b43dc74ddca3e0193d8759a822dbb98b10e
font_01_sfnt_off00010468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10468 10792 bytes
SHA-256: 8643ba4b3e19a17000747e0a8ad7247045dfbe1b05765e0e3cd6278397e9185d

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