Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d353a0c7288bb25…

MALICIOUS

PDF

53.0 KB Created: 2020-10-16 22:52:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dffd025f8e299ec1b5298fa1ed22bf6c SHA-1: dc271284da6394b5a65afc876f2fc600eb70f340 SHA-256: 4d353a0c7288bb256955217504b6d01853eceffc1e384583ce20cf724c670282
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.me/123?keyword=subject+and+predicate+worksheet+online In PDF document text
    • https://pavowojavujide.weebly.com/uploads/1/3/1/3/131398322/dobixun.pdfIn PDF document text
    • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/3a08eab74fbcd.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/9331796.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/zanadutut_wexudafenatogun_jetomefoja.pdfIn PDF document text
    • https://jowodetuleguzu.weebly.com/uploads/1/3/1/8/131856173/58dce66.pdfIn PDF document text
    • https://lodirunesu.weebly.com/uploads/1/3/0/8/130874391/kamod.pdfIn PDF document text
    • https://gevafitasib.weebly.com/uploads/1/3/1/3/131380901/a7b88.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2030/3006/files/cony_and_brown_bear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9572/7007/files/9121881171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/3954/2424/files/95599775497.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0495/9921/7827/files/87493335892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6855/1068/files/84636678178.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0234/9736/files/crash_the_chatterbox_participants_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/zedelevolaxerorib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0412/4580/files/2002_buick_rendezvous_wiring_diagrams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7028/4710/files/24094379563.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/4848/7070/files/16048228852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8479/9383/files/75502977035.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/187dbb99-4092-4767-acdc-b0b67c886919/bapusemama.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/451a69c6-9d7e-4d2d-a6ad-f354edf8be01/widijimezafizo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61adffcc-86d5-490c-baaa-2f832b7a9673/7262840307.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.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E27 5636 bytes
SHA-256: 198b125d3d457cf29bd28432897d6978cfa8aac283a669348ccc074eed8edfd1
font_01_sfnt_off0000914d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x914D 6856 bytes
SHA-256: 9999ae013200d54246662c8f9dbcd3e8d3ef2a582f679fae07f8f33eb3176733
font_02_sfnt_off0000a3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CC 10152 bytes
SHA-256: 7a6011bd37f4af4cfed79bb5c317a9a74840f56220534c8a6d7e1e727abfcccd

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