Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62d96af469a40fb…

MALICIOUS

PDF

66.2 KB Created: 2020-11-18 18:36:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 53c668989af9f60da5cd3edc0d26e971 SHA-1: bdbbd8bde7a2c4787d53d61c1bad78d3121de48c SHA-256: d62d96af469a40fb38ef24510195058eb3089963ca5861879895a5eabd4ddc7c
214 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, with one URL pointing to known malicious redirector infrastructure. This suggests the document's primary purpose is to direct users to potentially harmful websites, likely for phishing or malware distribution. No scripts were extracted, but the presence of numerous external links is a strong indicator of malicious intent.

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
  • 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://ggtraff.ru/strik?utm_term=alvogyl+%25E0%25B9%2582%25E0%25B8%2594%25E0%25B8%25A2+septodont In PDF document text
    • https://cdn-cms.f-static.net/uploads/4383147/normal_5f8d9bda66cfd.pdfIn PDF document text
    • https://zigegawemofeza.weebly.com/uploads/1/3/1/4/131406932/vunekozisutizutakafe.pdfIn PDF document text
    • https://mutimerujufidi.weebly.com/uploads/1/3/4/5/134526942/1f3dc1b72.pdfIn PDF document text
    • https://xavupavise.weebly.com/uploads/1/3/4/5/134584264/wegadojomoleborunopi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446260/normal_5fb5194a60e52.pdfIn PDF document text
    • https://lotagixowila.weebly.com/uploads/1/3/1/1/131164100/jumaje-povapeje-lejevi-nijeketak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f87c51c65f19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444358/normal_5fa026e59616f.pdfIn PDF document text
    • https://tenabawik.weebly.com/uploads/1/3/2/7/132710661/feluzoxusuta-faginabavulow-rekegivi-demiloboxikuxu.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/pedavom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://s3.amazonaws.com/godoremitiwuja/31591282950.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/62148459215.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/kipotigilufin.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/sahin_karakoc_artist.pdfIn PDF document text
    • https://s3.amazonaws.com/fefurorobumi/atal_pension_yojana_details_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/46757912374.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b4c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4C8 4972 bytes
SHA-256: 538bd5f88e8ee2704a389f127de86f311c2c6429e8453173de500e02b8b24317
font_01_sfnt_off0000c5d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5D7 6304 bytes
SHA-256: a21c56f3f4d17e77ae8f2d8a6d3ee72053d74658482b707375873d9e8db84e3d
font_02_sfnt_off0000d631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD631 10480 bytes
SHA-256: 269594d279195770f3337dc076add85d9eb552e7a33cf0580f9868b391e9d771

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