Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaf64d8773a9d49b…

MALICIOUS

PDF

66.1 KB Created: 2020-10-18 04:56:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 7b90fe4b6f5aecb1722292f68b477a85 SHA-1: 1d3fcd9258f8c553794792b71a4a2bc3af000cdb SHA-256: aaf64d8773a9d49b08815773631dda31c6f3ad51cd3d4eb45a4d6a685bd5af2a
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=qualcomm+atheros+ar5b93+wireless+net In PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/sinaz_fazevipavakiz_pugutumi.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/divili_dapixi.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/2823319.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5fbaba5-733f-4cc3-a732-3c524ab1ec47/28421732289.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8cda825-538d-4890-8102-5fd60d932675/77344944640.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16502db6-a729-4b96-ba94-06ba5ab777a3/nawosesana.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/028030b3-1fa8-453f-ae3b-1e2caf273bef/jewubedob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48f9d293-da7b-403e-b80f-2f0431d84b12/80831434221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a684f63-a35e-4718-9680-35ffd1c08259/36923393730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/893f78ed-5c33-47a8-a08c-640a917910bd/najavitogaxediwuneteg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d60cb46-0f9e-4160-8d04-14bcfa3a76ca/26365454371.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8839/5936/files/startup_communities_building_an_entrepreneurial_ecosystem_in_your_city.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6773/6225/files/hiketop_apk_hack_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5069/5336/files/new_headway_beginner_workbook_4th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1335/6194/files/drawing_moon_phases_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6952/9509/files/86176091550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0647/4420/files/austin_animal_center_foster_manual.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00009907.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x9907 11272 bytes
SHA-256: fd672b8f75e3ffbac908e060b6e80ef5d7a6bec56378750b8998386d15d119aa
font_00_sfnt_off00006c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C62 7452 bytes
SHA-256: 9282eb3688619d9dc57c855b84ac63655a7fd8d038a96826f33e4562a6b8a643
font_01_sfnt_off0000857e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857E 5776 bytes
SHA-256: ca836bb4d29aa4196bed245a9e477e7f7d2c969a065e85ca6501876fc85ed6ad
font_03_sfnt_off0000b8e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB8E2 16184 bytes
SHA-256: af860806de1c9db22d2fe60b233ec74612c249915bf55669f757bc1ef7509c51
font_04_sfnt_off0000eb4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB4B 3868 bytes
SHA-256: 7ca5c10a8fc24876c9a4774d97893c6c388d2f5f6052319cd0732aae4ff72ad0

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