Malicious PDF — malware analysis report

Static analysis result for SHA-256 6503565c62a43c83…

MALICIOUS

PDF

65.9 KB Created: 2020-12-21 04:00:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 6c17a79dd7b2f35d062a9e0c65910a8d SHA-1: 772a36cbd769b902dc315ee66e6fbd68436c10b8 SHA-256: 6503565c62a43c8312c857023b5393712489704927f782cf0dcddeb8394811d2
222 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file is identified as malicious due to its inclusion of numerous external links, a common tactic for phishing and redirecting users to malicious sites. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' specifically flags a link to 'ggtraff.ru', indicating it leads to known malicious infrastructure. The ML classifier also strongly supports a malicious verdict. The document's content, though appearing benign, is used as a lure to encourage interaction with these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/aws?utm_term=aviation+english+for+icao+level+4 In PDF document text
    • https://nipobajomofak.weebly.com/uploads/1/3/4/6/134641158/53d3f.pdfIn PDF document text
    • https://mafukizagodixep.weebly.com/uploads/1/3/4/5/134525221/a3fd9d270.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/warizipobigodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd13f346-ac29-40c6-a699-fe7d5aa636aa/41858260605.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9942b6bb-fc8b-4b95-a300-e642e2ca6184/budesonide_capsules_cats.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5da11972c46e3c96414f/1606376866402/falekoborab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e09b2f7-f71e-4c7f-a645-fdb16600a16f/broke_millennial_erin_lowry_book_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54bfda2-0b93-4bd3-aa87-aaa8ab7f5d70/ap_chemistry_stoichiometry_practice_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84eb4d1-84d2-4d96-902e-93a31a71a1b3/69440824978.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/application_format_in_gujarati.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5A5 5280 bytes
SHA-256: 2f5ea837a8cbea8dedf5ed748abe5d5a33ad51d97952a58abdfcc8bdd28ddfd4
font_01_sfnt_off0000d7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A8 10276 bytes
SHA-256: d67656935dc773c4ef2e974a37c73b5babed102c4a6097fdaeda8beff742cc95

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