Malicious PDF — malware analysis report

Static analysis result for SHA-256 3891d422e83dd3dd…

MALICIOUS

PDF

38.2 KB Created: 2020-08-10 13:20:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2ab47ecea5de59b5360aa9a8551f1735 SHA-1: 2c86f9677c8d59daa73d35848c8412b28cbce0b3 SHA-256: 3891d422e83dd3dd1e2635312611f13f9833844ba4374033dd1ee6d0a2e61e4b
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.ru/pify?keyword=jurnal+kinetika+adsorpsi+pdf In PDF document text
    • http://files.moldingconfidentme.net/uploads/1/3/1/8/131857916/1abc042f.pdfIn PDF document text
    • http://likux.maths180.com/uploads/1/3/2/6/132695663/nisaforokamirixiz.pdfIn PDF document text
    • http://pejoza.idahofriends.org/uploads/1/3/1/4/131407155/genitavizube_ritimenod_bilimogiremi.pdfIn PDF document text
    • http://wukamigo.wellsheltered.com/uploads/1/3/2/8/132815002/5036906.pdfIn PDF document text
    • http://files.glensheppard.com/uploads/1/3/1/4/131414743/0587865d5ec973.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/1/0429/1058/0899/files/subomirapude.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3097/9495/files/dejixusulopetogezozonemil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/wezizopuxarivino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2881/4760/files/d_d_disadvantage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3064/1829/files/sing_hallelujah_to_the_lord_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5385/0528/files/segonalifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/91882330993.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8863/4266/files/balarawijulasobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7063/6710/files/60989353469.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/misuxixelozok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5404/7125/files/pre_algebra_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2308/8290/files/65709623156.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/46436165845.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_off00004ce7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE7 4968 bytes
SHA-256: e539206682f3c05740bbe9ae761bffc4d384effa6998572bbf02e4b48d763ecd
font_01_sfnt_off00005dd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DD3 9396 bytes
SHA-256: 6d5b992c9a62395d4d5f7f213624ed4a50c74b561e75321db65d3e2d2a8001c4
font_02_sfnt_off00007df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DF7 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

Open this report in the interactive analyzer, or submit your own file for analysis.