Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb3b1c68fe9b063a…

MALICIOUS

PDF

66.9 KB Created: 2020-11-14 21:16:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e78f260821e87a446f5c8d2bcefb442d SHA-1: 71178cc8536d98e67af86b17ef3607e8830239ba SHA-256: fb3b1c68fe9b063a82724661566336f013a4f26a7a4904957a2dd42fd568e6c0
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to a redirector service. The primary redirector URL, 'https://traffine.ru/123?utm_term=watch+karate+kid+2', is flagged as malicious. The document's structure and the presence of a large number of external links suggest a phishing or scam attempt, likely aiming to trick users into downloading further malware or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://traffine.ru/123?utm_term=watch+karate+kid+2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4443354/normal_5fa7b254c282c.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/6977354.pdfIn PDF document text
    • https://vamukeroke.weebly.com/uploads/1/3/4/3/134353023/jadefa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454040/normal_5fad4bce30dbd.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/tigovatolis/adobe_acrobat_pro_dc_2019_keygen.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/71560235957.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/materialismo_historico_engels.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/cheat_engine_6._2_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/xofukojirevogubep.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/77901131644.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e654a4c-c345-4f51-ab53-21d959172971/39918868659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe2d3dba-2833-4803-8518-9e258ca339e8/stick_run_hack_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/jufanexikovopirafuzo.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/posolegu.pdfIn PDF document text
    • https://s3.amazonaws.com/fofeguj/lavikikizimajipeximuwokok.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/jolazubozixevugisuf.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/moana_images_free.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_off0000cc0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC0C 5024 bytes
SHA-256: 2f7e4d7e612066de2f2cf1c6488a18ae86df25400cae8a6d7a39d07e7ce54d56
font_01_sfnt_off0000dd28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD28 10000 bytes
SHA-256: 8ae1b4610c4226db7deacbf7a6796e54d488123066d5c3299012882e212bdd60

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