Malicious PDF — malware analysis report

Static analysis result for SHA-256 89bb5e3b7120e59a…

MALICIOUS

PDF

40.5 KB Created: 2020-11-02 15:44:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2cab6e15cc0dfe8dfa414a305f6c914c SHA-1: 907dc1f72a8592980e8391da84ca75ff7a787b09 SHA-256: 89bb5e3b7120e59a2555d75b212ce8c14f3013233f7ed97b1904f7b1c89e78b4
194 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to redirector infrastructure. The document body, though heavily obfuscated, contains references to 'Sims freeplay online app' and URLs that are flagged as malicious redirectors. The presence of a link farm and redirector links strongly suggests a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ggtraff.ru/aws?keyword=sims+freeplay+online+app In PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/vizuxowibu_nisug.pdfIn PDF document text
    • https://gurigibafex.weebly.com/uploads/1/3/0/7/130739571/851a7ba.pdfIn PDF document text
    • https://nenojidadexodu.weebly.com/uploads/1/3/4/3/134351563/bavatu.pdfIn PDF document text
    • https://jutivodip.weebly.com/uploads/1/3/4/4/134489611/suzugavaj_tiguzotu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/zuxilabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3721/9735/files/remove_google_account_from_android_pie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6108/3296/files/hack_wifi_zte_corporation_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4256/9368/files/deer_farming_in_australia_reading_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vajefam/givokerudemulizaxugedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2089/1798/files/congo_fever_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/crystal_beach_hotel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0632/3620/files/2020_gmc_terrain_intellilink_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/4864/7835/files/dazifijajesak.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/nebuvobo.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/workplace_harassment_case_studies_india.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_off00005fe4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE4 5252 bytes
SHA-256: 6d4a694c54d83d7e4321ac583faab7f0c917ef8325672c14882aca35dee9a4fd
font_01_sfnt_off000071b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B2 10416 bytes
SHA-256: eca2abf5c0d16d903e3f9d4935e70177c303fce5659ee29532fe4a05a49bde95

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