Malicious PDF — malware analysis report

Static analysis result for SHA-256 e387362473f75843…

MALICIOUS

PDF

52.5 KB Created: 2020-10-28 15:10:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 8af03c9791b07e1e351f1d7464a5e99a SHA-1: cf2e68193ee17ec7178ff658aa95c973f10845fc SHA-256: e387362473f7584308255ed47879e6a7e9018d77c205cd8312ed4b8509e62ed6
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://cctraff.ru/aws?keyword=wicked+witch+of+the+west+costume+makeup In PDF document text
    • https://xigeworimejol.weebly.com/uploads/1/3/1/4/131483719/a3dff3e1c.pdfIn PDF document text
    • https://vezorobabuwej.weebly.com/uploads/1/3/0/9/130969079/1523784.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/napegafuz-medejus.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/c13d287a47.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/rogatotatasavox.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/1/0478/3754/4607/files/formatear_samsung_ace_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af666103-d4ec-4365-b298-5642e1be9826/mixob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/664666af-a959-41b0-92b1-f28bbba2326c/wuzesexubuvejimixur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8fb7f51-92cc-4537-aeae-d62755e4f847/kuvajoxozulenajonoxuwag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46b98677-f32d-4959-b587-a3e520d4b0a2/difexit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19e2e4cd-4bcf-4df9-ade2-983424d88f9e/74584462042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2906/0001/files/fitchburg_commuter_rail_alerts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b1ce5a4-c8e3-41fc-b36f-829edac5a3c4/gasofiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/9120/1700/files/42602855816.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a82073d1-bdc1-4ce9-b440-dcda735fe2a0/lafimer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53918c57-955b-4c34-972a-7a0f3f05b61f/joximazejorerad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/8619/9975/files/biforikowoduvuvag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9503/4529/files/film_camera_store_las_vegas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c67d970-63f5-4ed6-b469-12993315918c/73379942404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f924add-40f7-4e86-be22-4060b3f7eb6f/circuit_analysis_theory_and_practice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fde4d67d-914a-40b6-a6f1-c8f2d460c9e4/42535564862.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f82f24e2-52cd-4f70-890a-5b7c607b9bd6/becoming_a_supple_leopard_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1349/7251/files/mortal_kombat_x_apk_mod_obb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7da7f32c-10cd-4fc9-8e0b-24da138aa6dc/flexus_trumpet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/8033/0653/files/51334566208.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5B 5436 bytes
SHA-256: 3b9e3dd3e0b60be6fdfd593565ef65eedc6aa59522591e943496f44e40830b9c
font_01_sfnt_off00009dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD9 11408 bytes
SHA-256: 38efd5beb5e8169487c6aac1002a15bad318edc9b6b6f768f1b8f645b26bd162