Malicious PDF — malware analysis report

Static analysis result for SHA-256 22ccd9b00892d929…

MALICIOUS

PDF

37.3 KB Created: 2020-10-05 02:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 86db8f96afa7ab6f9654a488b70ea269 SHA-1: 7fae722c367076c5c657ade9ff34daf34133d312 SHA-256: 22ccd9b00892d92906cccaeaf90d7b2476ba283d0836c8c4a2ac51ab66c70668
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://cctraff.ru/strik?keyword=winchester+model+94+pre+64+parts+dia In PDF document text
    • https://site-1038733.mozfiles.com/files/1038733/8986292048.pdfIn PDF document text
    • https://site-1036675.mozfiles.com/files/1036675/33443796808.pdfIn PDF document text
    • https://site-1036730.mozfiles.com/files/1036730/zezutexilomijujojedafutog.pdfIn PDF document text
    • https://site-1039563.mozfiles.com/files/1039563/64537525746.pdfIn PDF document text
    • https://site-1036872.mozfiles.com/files/1036872/dotalozitofiwep.pdfIn PDF document text
    • http://files.katyweirich.com/uploads/1/3/1/3/131379820/biviminitok_vupuzun_romufuxoxivin_jutone.pdfIn PDF document text
    • http://files.markcassata.com/uploads/1/3/1/0/131070579/ruxaxunerufo.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/1/0433/2093/4558/files/17224362373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8293/1112/files/dark_souls_3_aldrich_summon_anri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6103/5686/files/polaroid_onestep_express_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0542/9928/files/salesefibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/7168/5027/files/genetics_x_linked_genes_answer_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8201/5129/files/poxelaburaxajeka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/5484/9952/files/plastic_love_lyrics_english_caitlin.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_off00004787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4787 5512 bytes
SHA-256: d8b3d9b5e5883993cabdb1d9a151a4111c44cb754b62ec27365128d6eb4306ce
font_01_sfnt_off00005a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A0D 9456 bytes
SHA-256: 61cde3f65262f8a5b0fca69dcfa105c296552a301a0ebcdad58f045ee9eb1863
font_02_sfnt_off00007a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5C 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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