Malicious PDF — malware analysis report

Static analysis result for SHA-256 300f424bb1f83092…

MALICIOUS

PDF

67.0 KB Created: 2020-10-04 06:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2aa8bfbc35f89982368df379636eecb4 SHA-1: 30bac36790ebe5ce801da2403ebeb56ea5ed1c6d SHA-256: 300f424bb1f8309295c0aff49c3c189ebc9003e57c3020ac322aa66fe24e60e7
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=el+paraiso+kiddo+onion+link In PDF document text
    • http://xorujif.crownoftexasarabianhorseclub.com/uploads/1/3/1/8/131856819/4628333.pdfIn PDF document text
    • http://pukefoge.duffeyphotography.com/uploads/1/3/1/4/131438539/notonipulosodug.pdfIn PDF document text
    • http://files.councillpsychiatric.com/uploads/1/3/1/4/131438557/tigolu-zedosizevuligoj-xozutumud-muvekan.pdfIn PDF document text
    • http://tagupifut.ucdllp.com/uploads/1/3/1/3/131382028/jivebenagesoxepepadi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/029b6311-5d01-45d2-a574-7aefa35bff85/57538277854.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ce6cc22-4038-40b8-a47b-936ef83b295c/vodafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b057ad4-ce94-480a-8ef3-34779eda20a7/74839764220.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a9a2823-51aa-41f0-8ef7-0ec8dbf46882/lurixibumisoximexejekig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d28108d-d006-49ea-9318-171dd148c21a/25221614662.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb3adbf4-993e-4dfc-9587-351855d4d498/tutomizevofotaxelom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/943d6b7d-9979-4670-abdc-e89c21dd3455/71130530284.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8538/0246/files/nc_window_tint_law_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7578/7157/files/41594013411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0090/5380/files/plazma_burst_1_unblocked_hacked.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000985b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x985B 4972 bytes
SHA-256: 9e0092e262697bbf4b3b21f497ec36abbfb4703d61ddfccfb71b265b4bb4bbb0
font_01_sfnt_off0000a94b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA94B 7256 bytes
SHA-256: fed5d7863f98fb5b7c20d914aee0fb3fe5b23bb64a16b8becb83ed02696b3a06
font_02_sfnt_off0000c0e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0E1 11688 bytes
SHA-256: 483b51e7bed67b25c465d0c342078c0616423f8dae0ec6c42c315016a7fdcbfa
font_03_sfnt_off0000e83f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE83F 16460 bytes
SHA-256: f73f41ce2d82c0f168430cddafd5a3845ae5fa9902bee001f6fad69ae5f54bf7

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