Malicious PDF — malware analysis report

Static analysis result for SHA-256 87c303104f874331…

MALICIOUS

PDF

104.3 KB Created: 2021-03-15 01:22:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 348bdf1173dd8c2ef91f809ba91eeab1 SHA-1: 357da6e2a86522865eaf5006a579dcd69abb5543 SHA-256: 87c303104f8743311fbadfe42f98b9466fc57df73e3edd44fc7ef941c68f06ce
156 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. It contains numerous external links, with one pointing to `https://lozipotod.ru/wix?keyword=claude+monet+impression+sunrise`, suggesting a phishing or SEO link farm tactic. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to potentially harmful content.

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://lozipotod.ru/wix?keyword=claude+monet+impression+sunrise PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465941/normal_6031dbc086615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426812/normal_602ed70b64da4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481072/normal_5fd18c252c567.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488090/normal_5fcdd028d681d.pdfIn PDF document text
    • http://amorexpo.com/running_warehouse_customer_service280zo.pdfIn PDF document text
    • http://trastqort.online/estruturas_de_ao_pfeillgf5g.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://393102e6-89af-4738-8cad-89662dba8dc5.filesusr.com/ugd/33a16d_13aff3d606c14dd896cfe8e9de076fd8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/83211a71-4cb1-4252-afcd-8f19b69530ae/33099822201.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02c7b5fc-f111-4d61-b4d4-029a96c6540e/what_was_the_purpose_of_the_radical_reconstruction_plan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65db5e86-9e25-4cd5-ab81-774644e7e044/is_ddp_yoga_good.pdfIn PDF document text
    • https://s3.amazonaws.com/wowonesoribu/54112685096.pdfIn PDF document text
    • https://s3.amazonaws.com/lolaritemukole/97934932935.pdfIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_be1ab6146fcd4212a6a5a8c70d745647.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/095f74ad-ef2b-4339-955c-dd6addf5ca34/line_6_pod_hd_300_patches.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/writing_papers_in_the_biological_sciences_5th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/forwarded_email_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/fetiniramejuz.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/57015966332.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_off000155fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x155FD 5012 bytes
SHA-256: b4308e489ebfe86d5ccc2c202a23d7858fe0d1c76f5d1385c0aa55e3f79f2e6c
font_01_sfnt_off000166e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166E6 13756 bytes
SHA-256: dd811303be11487fe859b96b079a242f89e5311c796daa5a79f893871f775c06

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