Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6b2b58145fd40ec…

MALICIOUS

PDF

80.8 KB Created: 2021-01-11 22:43:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: eecd481ea3ecbf21a10bfa635db61038 SHA-1: 2ce0b44611edcb44cd12ea628d7759c3ac8b68ee SHA-256: d6b2b58145fd40ecdc71cb4511cfece04c07142162cc2d279b3369784f665222
156 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to SEO-optimized PDF files hosted on various platforms, indicating a link farm strategy. One of the primary URLs is 'https://traffnew.ru/aws?utm_term=building+commissioning+report+sample', which likely serves as an entry point to this network of malicious documents. The presence of embedded URLs and the overall structure strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/aws?utm_term=building+commissioning+report+sample PDF link annotation
    • https://site-1178425.mozfiles.com/files/1178425/lone_rider_motobags_erfahrungen.pdfIn PDF document text
    • https://jedefefebakex.weebly.com/uploads/1/3/4/8/134870379/1671145.pdfIn PDF document text
    • https://site-1174310.mozfiles.com/files/1174310/autocad_lt_2019_trial.pdfIn PDF document text
    • https://site-1178778.mozfiles.com/files/1178778/plant_vs_goblins_2_mod_apk.pdfIn PDF document text
    • https://site-1214400.mozfiles.com/files/1214400/adobe_illustrator_2017.pdfIn PDF document text
    • https://site-1168125.mozfiles.com/files/1168125/maryland_weather_report_nsw.pdfIn PDF document text
    • https://site-1178139.mozfiles.com/files/1178139/2851228762.pdfIn PDF document text
    • https://buderenedisam.weebly.com/uploads/1/3/5/3/135302361/mapozebubewo_wisedovuvamirer_koxutabuzujupa_gofunomuk.pdfIn PDF document text
    • https://site-1178280.mozfiles.com/files/1178280/39721021987.pdfIn PDF document text
    • https://site-1185743.mozfiles.com/files/1185743/fire_alarm_siren_sound_effect.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/xonobijikivo/nogijomupugalaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/70747536447.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/fovedubosak.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/benivuzifazapimoliziname.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_off0000ff65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF65 5440 bytes
SHA-256: fedfeaa107c9cd95635717bee956b00b9c85927d00a0133155f66bc1662c3f52
font_01_sfnt_off000111d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D3 10672 bytes
SHA-256: 3feeacbf1c03d045d8687ca719d712e923e1eeb118bded897458c1760ae67061

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