Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6fb9d20d801bee…

MALICIOUS

PDF

54.8 KB Created: 2020-11-03 06:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2dcf51cf82c64ac33a56b1a43cd1c79e SHA-1: 9a25e6f868e33579c7248d13c452c2b56c7eb005 SHA-256: 7c6fb9d20d801beed9278c64e63352bcd936b913eaaa6a933d1871c763196079
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a link disguised as a free download for a Spotify tablet APK. This link, https://cctraff.ru/aws?keyword=spotify+tablet+apk, is flagged as a malicious redirector. The ML classifier also strongly indicates maliciousness. The document's structure and embedded links suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/aws?keyword=spotify+tablet+apk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372753/normal_5f93a2dd54212.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/fibesezati/beadle_and_tatum_experiment.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/locura_de_amor_capitulos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fbbf4a2-bd83-4221-a943-a54e61a1f912/20556342885.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99d8402-f7c6-4739-9948-ee1850007d6c/york_chiller_manuals_ycal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dba00507-33c4-4ebc-8299-80e6150808c9/bryson_tiller_true_to_self_download_zip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4899b4d8-3b14-4357-9882-f9404e4d52b6/93515034308.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/89065849181.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/49134341778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/324524c2-0518-4cf6-ab85-c6d4df990c2f/75680808660.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/olive_branch_petition_definition.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_off000081bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BC 5028 bytes
SHA-256: c523fa4a46df80c2866657c773138986e841d664f8d6132b4c41015c841c1c78
font_01_sfnt_off000092f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F9 11172 bytes
SHA-256: b5543e99daa644dd8df3d4c8cd955d601a26954fad654277ade231bd5d552b6e
font_02_sfnt_off0000b92c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB92C 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15

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