Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ed7071059663324…

MALICIOUS

PDF

61.8 KB Created: 2020-08-16 18:17:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 623af74893ced3fc48209c4794e94752 SHA-1: 33558b1a76138c23751cc5ea9fece5f3d99ca337 SHA-256: 6ed70710596633243f44fe8fb3561ebf998026d262acb2437908a547a3df2459
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=character+sheets+dungeons+and+dragons+5th+edition In PDF document text
    • http://files.burkewellnesscenter.com/uploads/1/3/2/3/132302710/kugudofolotuf-nixapapalirazup-jetupojikegagek-ropuga.pdfIn PDF document text
    • http://gakexogoz.nairnsphotos.com/uploads/1/3/0/7/130775792/wefezo.pdfIn PDF document text
    • http://maner.jordanemmons.com/uploads/1/3/0/8/130813372/menol-rudevevakoref-wumuraf-paxebonama.pdfIn PDF document text
    • http://files.altaanz.org/uploads/1/3/0/8/130813913/tujowepetedinigemow.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/2507/5109/files/conduction_equation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/76703937464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/67748625258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2170/5124/files/kajapasejakiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/sapevuzibelulej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8105/6935/files/female_foeticide_and_infanticide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5727/4270/files/derivative_of_inverse_trigonometric_functions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/19204889154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/60012352126.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9546/files/wawawagodunak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1218/5494/files/rozujinadir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1283/9834/files/suzonuboleg.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_off00006acf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6ACF 23120 bytes
SHA-256: 2a74eeff18e43d52d5a53c4c0d7fdc2cb5e29f2e0fe8911f20bd99bd5a3a5e79
font_01_sfnt_off0000b343.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB343 5196 bytes
SHA-256: 9bbfdf1cd1b6cfbd85536c843b42458d71e9a6d0bc25fd4e67eaf3abaa280d1d
font_02_sfnt_off0000c4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4E2 10544 bytes
SHA-256: 2a7dbbf08b8210c0fb5c95b3d4df5f73e5817ff990e965b62c79ce195bbc3f40

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