PDF malware analysis — malicious · 64620a99763a4039

MALICIOUS

PDF

44.5 KB Created: 2020-10-14 04:02:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: 1b1d4763b0eb933921f0cb0247041735 SHA-1: b7c4f4be306102216efa2d355bd25e2147ab8966 SHA-256: 64620a99763a40391c79ce3cac751802192fe6d4e80effcb4e674e03eb7cafaa

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm and a redirector URL, indicating an attempt to lead the user to malicious infrastructure. The document body, though obfuscated, contains the target URL and references to management principles, likely a lure. No scripts were extracted, but the presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a phishing or redirection attempt.

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.
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.
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/strik?keyword=leadership+in+principles+of+management+pdf In PDF document text
- https://site-1038586.mozfiles.com/files/1038586/34960656948.pdfIn PDF document text
- https://site-1039702.mozfiles.com/files/1039702/vavotu.pdfIn PDF document text
- https://site-1037094.mozfiles.com/files/1037094/pomakesizonaridusikujaloj.pdfIn PDF document text
- https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/gevoderovepiru.pdfIn PDF document text
- https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/c2099e721b.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/d97b9166-c027-44ab-a31b-af702a11ca72/bugovazuguwotujenifupad.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/33601f37-c304-460a-a1cc-444bfbdc14bc/1640290172.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/dd2def63-2f6b-4665-a394-4d8a0121282e/69168623329.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/40efd7fc-eb01-4d91-b165-5c3a1f6c6153/63889683689.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1b94e667-3e4f-42cf-818b-1175969f9f29/41461186430.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6d9d4d63-1ef2-4d62-8029-a839573dd8a2/5631859504.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/161a2b9d-621d-4eb8-8354-6aba0c6a92c1/lapanidopufonegutaferor.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006364.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6364	5296 bytes
SHA-256: `60e9dac8b71962d35371b92a98796aaf1417c7f30ac3583dbb23a40f9f5c4f27`
`font_01_sfnt_off00007531.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7531	9952 bytes
SHA-256: `539620522b9d0e3bdcc37ff52cca4808cb12e30b1a5d8f47d450442683c1c9a6`
`font_02_sfnt_off00009729.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9729	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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