Malicious PDF — malware analysis report

Static analysis result for SHA-256 db3800ef3647ef1a…

MALICIOUS

PDF

65.1 KB Created: 2020-10-19 04:20:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 53fc8836470e8674d6e39fd26b988b80 SHA-1: 7bcccb2785a245fcd9447420200703a4b0c8523b SHA-256: db3800ef3647ef1a69401679ea0bdd351c3b94d629b90dd5921b314e3e08ef30
184 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=silent+night+guitar+score+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370307/normal_5f8854d7ab7a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365560/normal_5f86fa89ee4f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374368/normal_5f8b052892d02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368471/normal_5f8a1ef86c449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369779/normal_5f8b6ee38e37a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366987/normal_5f8758c71bfbb.pdfIn PDF document text
    • https://tavumake.weebly.com/uploads/1/3/2/7/132740551/dotiravufarad-tikomixeboluxal-lapav.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/2450782.pdfIn PDF document text
    • https://xavujome.weebly.com/uploads/1/3/0/7/130739328/6045259.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/sutusozupixapu.pdfIn PDF document text
    • https://xilorufanil.weebly.com/uploads/1/3/0/7/130739938/vetet_pimor.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/54a886e1-802e-432c-85ad-c66576e3f739/94865435741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/562c3a06-2e06-4d47-89b9-1b9980cd146c/1493_charles_mann.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7590e90e-7540-4852-a93e-44123b48dbeb/ralolurepunidamiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed1d6ae9-8990-4bcd-90d5-94753583069b/41903191547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69864751-f024-434e-bdd6-4c5794d901ec/17167273038.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d062e1-455b-4a2a-a565-ba39c038003a/crazy_love_youth_bible_study.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef891adf-b5af-42b5-892c-f126a24b9fcb/jplay_crack_6.2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3386def-2daf-428b-ae0c-b407bc7eb536/9123032486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5999/2993/files/29619850406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9682/8832/files/guess_the_emoji_cheerful_level_46.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6675/2675/files/powerstroke_3100_psi_gas_pressure_washer_with_electric_start_yamaha_engine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6881/2183/files/pagodififitamukusopefar.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_off0000b0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0C2 5520 bytes
SHA-256: 243a0f3df69b18c510a48510f345cdf504e0caf2ccdedb69190f37ef8972e658
font_01_sfnt_off0000c377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC377 16572 bytes
SHA-256: ad60a7a4bfbbcbe9f65396fa41ce6fd28fa275d25208be873cd1bf218774d046