Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd6f6fbd2da6e8d…

MALICIOUS

PDF

38.8 KB Created: 2020-10-25 10:13:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: dd42cc472dd6113635a10514f8172f01 SHA-1: d242838f902f807c0fa3cd5e4886b9f6dcfb65d3 SHA-256: 1dd6f6fbd2da6e8d4debf5a9a2fc00d8b38eb2ea7bb3c6a4f88c023fdc0eeb1a
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.link/aws?keyword=biochemistry+and+molecular+biology+book+pdf In PDF document text
    • https://sisodiwitamusoz.weebly.com/uploads/1/3/2/6/132681746/duwiwizafede.pdfIn PDF document text
    • https://jodalutuz.weebly.com/uploads/1/3/4/4/134444421/0301d8b10.pdfIn PDF document text
    • https://jorimedazaget.weebly.com/uploads/1/3/0/7/130738946/rulixajelusoxom_kiwadujobev.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/9165930.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/metedidizuj.pdfIn PDF document text
    • https://topemarepebide.weebly.com/uploads/1/3/4/3/134316461/bbd8071e554e7ce.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000057e4.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000057e4.bin)
    • https://cdn.shopify.com/s/files/1/0501/6132/0097/files/97376469227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0613/8787/files/tofupomuli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4374/1083/files/free_solar_system_worksheets_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/citrix_receiver_android_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4682/8704/files/h2ocean_piercing_aftercare_spray_cvs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0844/8920/files/toyota_camry_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1731/2152/files/question_words_test.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/gm_service_information_accessories_manual_2018_silverado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1283/3959/files/computherm_q3_rf_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8535/5425/files/scribblenauts_unlimited_mods_android.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/bajuz.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/the_raven_allan_poe.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/40383278485.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/learn_autocad_2007.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c82c9e-34c7-4c44-bf9d-1be255754609/8544802950.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50a52e90-ad91-4ba0-9c44-55b9c22530ef/biromelemiviluj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/500258e2-b5e4-4f15-aae1-e697f1e39008/50073317398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4370d46-5dab-4ae2-844e-82804e5025d1/xiwawenekutekiduluxuxuluk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6585e133-27e6-4d79-a17f-e07681c3b32d/17322039302.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 extracted file (font_00_sfnt_off000057e4.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57E4 5924 bytes
SHA-256: ec7c5799a1e00f7ef8bb42e30306ff168de9086c920580982750dcee9840df88
font_01_sfnt_off00006be9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE9 9836 bytes
SHA-256: 41268b8bf0bc4bb4b03025de80bece6e003706cad830d21c1c15640e8f354a11