PDF malware analysis — malicious · b18e74b9fbe7568a

MALICIOUS

PDF

49.3 KB Created: 2020-10-17 06:09:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25

MD5: 0e5205abe2a6e3d42ec3b7d16bc81852 SHA-1: ef124a55da2f56649988d71224ef4b1bb83ed6f4 SHA-256: b18e74b9fbe7568ad005b6781cae817c7fd27ff9075be7b534bb10a848fc4ed0

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://ttraff.me/123?keyword=plague+inc+scenario+creator+apk+1.2.0 In PDF document text
- https://cdn-cms.f-static.net/uploads/4366346/normal_5f8773b174cc9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378382/normal_5f8a0fe17feaf.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367277/normal_5f875a0e20e18.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367642/normal_5f88c0adddd47.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376357/normal_5f8a105ac3903.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370068/normal_5f89a02dc86fc.pdfIn PDF document text
- https://folukufisika.weebly.com/uploads/1/3/1/3/131384255/rumekovuba.pdfIn PDF document text
- https://gonoloxezejuje.weebly.com/uploads/1/3/1/4/131410007/104959.pdfIn PDF document text
- https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/5401885.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://cdn.shopify.com/s/files/1/0485/7770/8197/files/dieta_de_500_calorias_por_dia.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/1328/2213/files/negative_air_machine_for_sale.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/0844/8920/files/toyota_camry_repair_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/8360/4903/files/1982212763.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/8938/5890/files/dekulemugu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/2348/1017/files/maltodextrina_que_es.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7048/1076/files/35947073229.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9376/3254/files/audio_technica_2020_mic.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/1422/5559/files/andriessen_workers_union.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0429/9603/9833/files/wakewukedineboxiku.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/8176/3483/files/ar_15_drawing.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006336.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6336	2880 bytes
SHA-256: `619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0`
`font_01_sfnt_off00006d74.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6D74	5404 bytes
SHA-256: `b74e62f3bd43b415f8242d52ff28f540233252ab2c9bcd3bf609c4a2efe52db0`
`font_02_sfnt_off00007fe5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7FE5	12448 bytes
SHA-256: `63913eff412d3d831d502c2ae7b1b6059e9fa13a91f8ff25d72f5d65b74518a8`
`font_03_sfnt_off0000a78c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA78C	4324 bytes
SHA-256: `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`

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