Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bbb6950414d32ac…

MALICIOUS

PDF

44.9 KB Created: 2020-10-05 19:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f8acf7e75c600c2b89007272ac1b66a3 SHA-1: 6b8a7d373c5aca170259ca0f6b09eca0bd70ffef SHA-256: 5bbb6950414d32aca71b03d2655a075486978d5498918f915fcb6d83dcd3dd7c
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/pify?keyword=belle+da+costa+greene+award In PDF document text
    • http://files.aimeesrabbitry.com/uploads/1/3/1/1/131163635/4ca878.pdfIn PDF document text
    • http://files.loppernorthamerica.com/uploads/1/3/1/4/131438814/divogosa.pdfIn PDF document text
    • http://diropebot.drandrewlukaris.com/uploads/1/3/1/3/131382113/240044.pdfIn PDF document text
    • http://biluf.elkrapidsnews.com/uploads/1/3/1/4/131407995/zuzodinej-sewirilo.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/18f7cf98-68e8-4ba5-a35b-a0a0560b313b/46581079414.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f23acb53-e9a4-4a74-bdd0-867fc6c32875/60515932483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82eccf19-f54e-4766-9f88-306ab79ade38/34166085499.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c3afca8-7591-4d4f-9f2f-6c8bb5a851eb/tigurezobasa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79a1c14b-74cf-4b9c-bf38-c87d148d6b41/sisufekowetakigatanulab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88912013-41d9-4b37-b768-7f794a63cd09/82391359157.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5568671b-9734-4fc5-8de1-5c9b034bdbc9/45022936313.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5168/7848/files/dinipexilegemovarigane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7185/1684/files/fiona_burn_notice_accent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1698/6534/files/estudio_biblico_sobre_adorar_a_dios_en_espiritu_y_en_verdad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/3655/7736/files/clicker_heroes_2_gilding_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D4 5248 bytes
SHA-256: 3786881fa98747778098c03a884e42dab2c9454ec0e11044868f0a56c06854bf
font_01_sfnt_off000083ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CE 10156 bytes
SHA-256: e9ffbf73491b4c1ee4a34d913f6695f2bb83c6c5c4e3e243ba005a650ef6e138