Malicious PDF — malware analysis report

Static analysis result for SHA-256 5be5766b0bac7c6e…

MALICIOUS

PDF

67.5 KB Created: 2020-11-16 19:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 211649a0a197a2070059ec0cd8934337 SHA-1: dda9d4c143cf3f382d45e294d4aba09a6cab0f46 SHA-256: 5be5766b0bac7c6e9cb15993359e34e896aa9f878708465d3762775458cd17a4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=grihshobha+kannada+magazine+pdf PDF link annotation
    • https://ketoleva.weebly.com/uploads/1/3/4/6/134642234/65393ea2.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/felikisixiga.pdfIn PDF document text
    • https://lewelekokoje.weebly.com/uploads/1/3/4/3/134333059/3488549.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/pidufozu/nabapufugejonosejixoxojov.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/30987173773.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada59612-af76-4bde-b30c-a4bb0fca1bb9/jawani_jawani_se_takra_gayi_mp3.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwuxot/96727552171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee82c46a-71ef-4b76-a773-7f44a42eabe5/mumeginik.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/lone_survivor_putlockers_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/post_great_grains.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/vexuni.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3C7 5708 bytes
SHA-256: 7665f1ab39afd9fc74e7fd969b78267bcfc026dd8465d4c9c026b3bab8a13db9
font_01_sfnt_off0000c711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC711 10960 bytes
SHA-256: ec574340ce55085b330a56323b182476720ffa46633219ef9247b0dd4159c2f6
font_02_sfnt_off0000ebf7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBF7 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15

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