Malicious PDF — malware analysis report

Static analysis result for SHA-256 b20d995aa841d675…

MALICIOUS

PDF

47.4 KB Created: 2020-10-22 13:50:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1f4f62e274928a7f35189816e1e58de7 SHA-1: 9aeef347c385f5cb6badbb32a760e26642e98ee2 SHA-256: b20d995aa841d675f755e97791f8e884356943bb611eebca4d70871c28d9d9e3
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a prominent link that redirects to a malicious URL, identified by heuristics as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains text related to 'Pokemon moon emerald emulator download' and the malicious URL itself, suggesting a lure for users seeking game downloads. The ML classifier strongly indicates maliciousness, and the redirector link is a primary indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?keyword=pokemon+moon+emerald+emulator+download In PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/9039453.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/posumiwuwolosurun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378160/normal_5f8acb8d4bd86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382201/normal_5f8cafeb673ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368226/normal_5f89a7b9c4cfc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_5f8f9a39eb088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392207/normal_5f8ebd0b649db.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/vumepidizo.pdfIn PDF document text
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/wegapogegojisapogiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f8c98ae1e190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f88555ebf598.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/648b06f1-fbaa-4f73-8dbd-6f2a08c2f153/patronus_zorro_de_significado.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce6c4b79-ccb1-4c1d-8b43-2537ba712dfb/1310119617.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db63074b-4560-41c7-afea-53cf56b45d4b/92776359940.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14383619-0cd3-482e-84f0-60e54dff9a05/33434945371.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce7159f4-8992-4dc8-a3c6-4084c837bc87/20073966540.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/94444464424.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/lavitor.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B06 4784 bytes
SHA-256: fb51848e90bd40b222327854e485f71204c96fc94c340e42ecf8e675a95aa559
font_01_sfnt_off00007b33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B33 10976 bytes
SHA-256: e4924add3b98874274b514926db4fac2cf44f1f92728dfa80056376528d0eaf7
font_02_sfnt_off0000a082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA082 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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