PDF malware analysis — malicious · 11ccd9ef944821d9

MALICIOUS

PDF

78.1 KB Created: 2020-10-27 03:47:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: a07f71f111613f30f65846e2574a6c17 SHA-1: 9159ac0fdf0165299ea137c90fe12dc7201ce65d SHA-256: 11ccd9ef944821d9a7ef7ecc70760bbc3c4591b4b623c75bb31a850f6ec3e5c0

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one pointing to a known malicious redirector at 'ttraff.com'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score point towards malicious intent, likely related to phishing or malware delivery via a link.

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://ttraff.com/123?keyword=define+radial+organization+in+architecture In PDF document text
- https://cdn-cms.f-static.net/uploads/4367311/normal_5f87c1b9c232a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366395/normal_5f8e725f3c056.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370533/normal_5f8fd7b7cd2ae.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365659/normal_5f87234132939.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366622/normal_5f8e5c517ef84.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://s3.amazonaws.com/sugaguxagu/55151798573.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/70868243551.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/present_simple_and_present_continuous_exercises_tests.pdfIn PDF document text
- https://s3.amazonaws.com/xezonijida/retibedosureridon.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/3ca3922f-1171-4dd9-a6f8-96b26477a8a2/state_employment_application_form_s.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/82b074f9-3238-4128-a143-29fb4601b849/tempur_pedic_remote_reset.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7cfb09ed-1290-4c25-9dfb-a70ac64e127c/fusudubilolene.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/8d4a91e2-45ac-47dc-972e-60ef9966b15b/gufukogakexidejid.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/660355ca-950f-4cfd-a76e-c3b59f0cb78a/11565892411.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/1966/3522/files/tofewol.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/4632/8737/files/rise_of_the_kings_apk_download.pdfIn PDF document text
- https://s3.amazonaws.com/kevava/alibaba_aur_40_chor_story_in_hindi.pdfIn PDF document text
- https://s3.amazonaws.com/mamukawaxatali/javascript_blob_application.pdfIn PDF document text
- https://s3.amazonaws.com/bofake/aptis_test_with_answers.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/pijuririfajuj.pdfIn PDF document text
- https://s3.amazonaws.com/wesezuzuvalirik/contrarian_investment_strategies_david_dreman.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/14340428998.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_off0000e2ce.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2CE	5036 bytes
SHA-256: `dd512c1ab8a36e703008e8aea806a6b7f582740d21fa76b766aba6de55806681`
`font_01_sfnt_off0000f3f2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF3F2	11792 bytes
SHA-256: `150ea1d080a31f782f59269fb6cd693c0f0b43c5b396dc4aa8019ba8760b7d37`
`font_02_sfnt_off00011a76.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A76	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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