Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a091402c2059aef…

MALICIOUS

PDF

44.0 KB Created: 2020-10-28 10:54:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2e223fe36a49c486512abcc94350bc6e SHA-1: c114cab4441cc3f2936bfd838d4208ee64a9877c SHA-256: 2a091402c2059aef770fad0024b81e40cadc365a2d8c287d77235676d6e2c184
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://ttraff.me/123?keyword=team+extreme+minecraft+mods In PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/98a1aa32.pdfIn PDF document text
    • https://toxavikosas.weebly.com/uploads/1/3/4/4/134437834/rawijexevuxi.pdfIn PDF document text
    • https://gukepofefefika.weebly.com/uploads/1/3/1/4/131437977/nupuvu.pdfIn PDF document text
    • https://ruvazokof.weebly.com/uploads/1/3/4/0/134040659/zulirimolejepu.pdfIn PDF document text
    • https://paxiguvemogi.weebly.com/uploads/1/3/4/3/134317910/3359397.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/vozemago-semowamun-lozubo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c23d03-5b4f-4585-9b11-ff7a21a29cbf/66041641625.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d586842-adfe-4c4e-88f0-969206818acf/limobuluriwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5cb3f39-f8ed-4925-b32b-c8d81c4ba07b/wikelozafolulo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44bb18d2-37d8-40ab-9bc5-b3e8a688da1a/35468623409.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87dbdf6c-2b44-42a9-ad1a-4d93f7281a16/fibizifoborasekiki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/7482/0528/files/luwifasezeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/6530/2936/files/lyrics_sunshine_in_my_pocket.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8258/0130/files/vortex_4000_rangefinder_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/3029/4940/files/zedafebigaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/1536/2489/files/52407032459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8131/1426/files/68199023437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1497/9221/files/difficult_thanksgiving_word_search.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5952/8355/files/indian-ish_priya_krishna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0346/1283/files/tuzomarujafajo.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_off000061c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C2 5152 bytes
SHA-256: 31b39e2d0c6f68b0d792e2fc084b5e721566086353577a07dfcc8e799802aaa6
font_01_sfnt_off0000732a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x732A 2052 bytes
SHA-256: f71a47484c95d7a8a65244bd51e38c405cd89f9b07b6a5ad15c9a573391ef875
font_02_sfnt_off00007be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE0 11484 bytes
SHA-256: 53fe22656926ca372a0172b5aecfa8483c699137d8018ee8c3038a331e35f80d