Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e34275ecdeb278d…

MALICIOUS

PDF

54.3 KB Created: 2020-10-20 01:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 87e2b2be12b407492c9a3f1131ebde0c SHA-1: 671e415bd2f4717c0c9ed7bbb63a66663e913144 SHA-256: 5e34275ecdeb278d05ad35aef151a102220c6162e5973b80e226467dafcb1544
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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/123?keyword=presentation+about+healthy+lifestyle+pdf In PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/nilezis.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/tidivobinimigip-banez-batipafon.pdfIn PDF document text
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/1483727.pdfIn PDF document text
    • https://wuwuleli.weebly.com/uploads/1/3/1/3/131398564/8fe43.pdfIn PDF document text
    • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/sofunolofokex.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0389/6230/files/heavens_just_a_sin_away_lyrics_and_chords.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2420/5982/files/asimovs_guide_to_the_bible.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7125/3911/files/ghq_28_scoring.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/9291/1298/files/sitting_on_knees_pose_reference_drawing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/7145/9494/files/mapipedaburironejevim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1616/7328/files/80032168716.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/39799165955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8771/9320/files/runnings_supply_bismarck_nd.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5657/3863/files/nopel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5495/1317/files/lafasir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/velelekez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/joruvofatexorediv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2675/7786/files/19741113328.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5517/8150/files/erie_indiana_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0714/7671/files/kinns_chapter_35_administering_medications_quizlet.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000803c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803C 5252 bytes
SHA-256: 9aced46e5e21ddf681ff95330c7b936d0c8d55259ac05556153f058ca687d3a4
font_01_sfnt_off00009202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9202 13576 bytes
SHA-256: 6eae90c534ecf75f25e3d036d962ef4ae801db2356bdc083f64fdedb07d9e382
font_02_sfnt_off0000bd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD57 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361