Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c71bde7dbaad502…

MALICIOUS

PDF

57.2 KB Created: 2020-10-02 13:33:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d2291217c1134b3794bc84a7d425b710 SHA-1: 2105b19e725bab8e6eba22a41893691f8ff90f60 SHA-256: 7c71bde7dbaad502c00ac3465f98a3e4669872d1d62d50f23b59fc6c984cb04f
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://gettraff.ru/strik?keyword=neogeo+rom+pack+retropie In PDF document text
    • https://site-1038618.mozfiles.com/files/1038618/10736051531.pdfIn PDF document text
    • https://site-1038840.mozfiles.com/files/1038840/sobowewudolumufupunar.pdfIn PDF document text
    • https://site-1037886.mozfiles.com/files/1037886/36816856363.pdfIn PDF document text
    • https://site-1037900.mozfiles.com/files/1037900/26479788182.pdfIn PDF document text
    • http://somet.utahyouthcourts.com/uploads/1/3/2/3/132303354/jurimagilivom.pdfIn PDF document text
    • http://files.neilbushby.com/uploads/1/3/1/1/131163976/jikekoxatadix.pdfIn PDF document text
    • http://lotiguji.missnationalbeauty.com/uploads/1/3/2/6/132681300/9479848.pdfIn PDF document text
    • http://files.nickrosencutter.com/uploads/1/3/1/4/131483214/5070139.pdfIn PDF document text
    • http://files.mawimbidune.com/uploads/1/3/0/7/130776769/10690a2c.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/1/0483/2218/3331/files/christ_our_life_grade_7_chapter_14_review_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/5659/8692/files/photoshop_download_crack_ita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4975/3493/files/inequality_word_problems_worksheet_6th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8454/0823/files/39172226909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7104/3739/files/2017.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8046/1717/files/81147221174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4512/6812/files/men_subway_costa_rica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0026/1540/files/26867494949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4978/8327/files/93904370283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7924/9319/files/sam_and_dan_games_ptd2.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007978.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7978 3924 bytes
SHA-256: 85308601d9135454910240bfdad8817e0ac2e5307433be786283c1d5dad4462d
font_01_sfnt_off00008762.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8762 4760 bytes
SHA-256: 76d7777e5e244f77c9b8cd96198b626316f0836ed1d7662e32ef065e277bdb37
font_02_sfnt_off0000979d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x979D 15504 bytes
SHA-256: ecc34dfcf87097b7ea039994e76425b46dabea92505e60943e9f0ca091025d3d
font_03_sfnt_off0000c782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC782 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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