Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f2a74db0373802e…

MALICIOUS

PDF

63.3 KB Created: 2020-10-15 05:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: cebd55d26e77e3d05cb3365b83d6361f SHA-1: 7e512030829524b70326015cd1daf81950d790d8 SHA-256: 5f2a74db0373802ee752035bed00af31e53eaaec15af62c9f6ff073a30b707c1
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://ggtraff.ru/123?keyword=7th+grade+math+curriculum+map+pdf In PDF document text
    • https://site-1040282.mozfiles.com/files/1040282/69140072660.pdfIn PDF document text
    • https://site-1038303.mozfiles.com/files/1038303/xutukujumiruzopega.pdfIn PDF document text
    • https://site-1041499.mozfiles.com/files/1041499/zekagobizejonakudaf.pdfIn PDF document text
    • https://site-1044154.mozfiles.com/files/1044154/37248317582.pdfIn PDF document text
    • https://site-1043662.mozfiles.com/files/1043662/tofabonixukuwuvuse.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/0e0cd.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/vexuwubebupejenuv.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/ce2c21c.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/digokasawuj-jipamuputevuf.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/559396c9-7c2a-4b2b-b303-b4b331ad68cf/69481586143.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87da027b-0e94-4386-b2fe-2c313a0b688d/dibenetelof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/719e6c4e-d56e-4362-9b64-527c6b46767f/virex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fc1d206-f094-4334-9941-ee005ed02625/jalezajaxulukiradaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40a3fe06-5394-440d-b438-f4e94a754935/zupijo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/986082b1-6126-4c29-ba73-2a9710a93389/vunarebenakegawexes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e654771-7d20-4fa7-8628-c943cbe33c7f/94460373001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78cc91cb-f9a2-437a-8164-13643d43ac40/78889999302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74846577-0819-4b8d-8ffd-5ab17776f679/baninunagemasopenefixar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/548758fa-917d-4a5f-9b3f-c4d7b24c5c3f/pijexavid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dad92c8e-ae3c-4150-b992-5b87c4935813/xegitedemuxotazon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fa850de-934e-46fa-bdee-498b9a6ac539/derubu.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b77a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB77A 5376 bytes
SHA-256: fa91919391c73ba52a2cc18674836d536426454f646eb7be0f873ec19b207852
font_01_sfnt_off0000c9aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9AA 11212 bytes
SHA-256: febb5999dcc024a98a51db7a567135d002b90b1850c5f25f7bce6f729586ec30

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