Malicious PDF — malware analysis report

Static analysis result for SHA-256 3fb740ebc8842908…

MALICIOUS

PDF

45.9 KB Created: 2020-10-09 14:45:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 4b3a129a19d98ebae55f356f4c4427e7 SHA-1: 7543dcc0af826b07ef89adf196fec89ddbfc7cbc SHA-256: 3fb740ebc88429085c0c5ce06e9708ce5e5ea80278d075d4bbb3040e50487da6
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • 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://cctraff.ru/strik?keyword=versed+davis+drug+guide In PDF document text
    • http://lazedegu.renatasellitti.com/uploads/1/3/0/8/130874304/dolosa.pdfIn PDF document text
    • http://files.biglakeelementary.com/uploads/1/3/1/3/131380894/pokimowef-jikexuzupizu-divotamapumesis.pdfIn PDF document text
    • http://files.andrewmleslie.com/uploads/1/3/1/3/131397983/7536487.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/1/0433/9980/7126/files/17276151683.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7847/0817/files/a_different_mirror_chapter_1_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8671/8129/files/zavodewubu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6332/8418/files/lockwood_and_co_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/0695/1328/files/the_obstacle_is_the_way_epub_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2192/1177/files/fogupalipenuvomiwoneba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7207/2096/files/air_liquide_propane_sds_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1886/9665/files/bridge_across_forever_lyrics_highway_101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3854/6840/files/62505527947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0028/5342/files/xamekamufukum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/1318/4925/files/latuvujuremazalobubomav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/5672/1831/files/bopepozajafezepidasesipo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1007/9898/files/the_power_of_a_praying_woman.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5901/8408/files/yo_te_amo_chayanne_letra.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 6

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_off0000691b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x691B 4988 bytes
SHA-256: 056abecee1a2d5d546206efe1d7128a520c678d7a1a64db73dd29bee705c8318
font_01_sfnt_off00007a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A28 15032 bytes
SHA-256: 98733eb9323058a683ccb08f56d754c0d4ee07922c88677e4f1dd8a0923fa82a

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