Malicious PDF — malware analysis report

Static analysis result for SHA-256 e45f57e8cdcdea16…

MALICIOUS

PDF

42.2 KB Created: 2020-10-25 13:30:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dc4dddbacafe7ed4a1cf6b81482feb05 SHA-1: b1115ec673568629c0366e1d4a388f839a5231e7 SHA-256: e45f57e8cdcdea16ff75f9e686e72838386acf703cab1838d3920021262f2d7b
194 Risk Score

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://ttraff.me/123?keyword=asus+p5kpl-am%252Fps+motherboard+circuit+diagram+pdf In PDF document text
    • https://xufizigox.weebly.com/uploads/1/3/4/4/134479456/5174312.pdfIn PDF document text
    • https://sakukavazu.weebly.com/uploads/1/3/1/3/131379729/1733051.pdfIn PDF document text
    • https://sukowaletudevux.weebly.com/uploads/1/3/0/8/130874669/3f8c71884.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://uploads.strikinglycdn.com/files/301248eb-b1ab-4fe6-8d1f-d6e91463a897/863931947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2122eb5e-24e6-46ec-8bb3-362a6455f7a3/dasazafafax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f53a646e-27fd-40ae-8b99-fe521af99c01/dragon_ball_gt_a_hero27s_legacy_english_dub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/378e1c81-6d00-45e1-95c8-423688b503ed/81012816437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/581b18ec-9086-4c66-b558-be36fc32cff6/zasipume.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/804e8519-e003-4f9f-8f34-6a2bb8ae360c/kobix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1da502f0-502e-49f7-91fa-59b36c94e6f0/61939431118.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/833f8ea6-5fa2-4b31-aedd-38fa874c01ab/80234523734.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/349e931f-74ad-47c2-bdb3-47820c40ab49/84176302666.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be54aa24-7aa2-4f7a-a612-ed00db3941ca/98266397405.pdfIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/cantorales_liturgicos.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/56080416743.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/choice_theory_reality_therapy.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/39358449006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1766/5184/files/the_claw_house_murrells_inlet_south_carolina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4247/8501/files/ap_government_textbook_online_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1028/3437/files/dk_kings_osrs_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/7571/4209/files/spotify_cracked_apk_xda.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_off000052e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52E3 5732 bytes
SHA-256: ba7a3918346dc43a497cb2c934bb99c2024745dd12fec5bbb4f347a4d91688d7
font_01_sfnt_off00006676.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6676 10988 bytes
SHA-256: 37234b951b7e22324d821d0b3a1a21d868685b839d09effced1094b652f8fba1
font_02_sfnt_off00008b30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B30 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333