PDF malware analysis — malicious · b317b3c08efaaf3a

MALICIOUS

PDF

67.6 KB Created: 2020-10-29 08:01:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: e95d123185c07d38c6346bfa72f0b0c1 SHA-1: 485c73ec251a5495df16ba5af06948cfd45534b6 SHA-256: b317b3c08efaaf3ad90d05f5ba5b4cea04d70796cbaf198346b71c06e738acc3

94 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link that redirects to a malicious URL, disguised with text suggesting a printer setup utility. The ML classifier strongly indicated maliciousness, and the PDF structure itself points to a redirector. No scripts were extracted, but the embedded URL is the primary indicator of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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://gettraff.ru/strik?keyword=123+hp+com+setup+scanner In PDF document text
- https://cdn-cms.f-static.net/uploads/4379477/normal_5f94138c24fd2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4392463/normal_5f94498bf2c10.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366055/normal_5f8a1ea2b8c43.pdfIn PDF document text
- https://farupixin.weebly.com/uploads/1/3/4/3/134314126/tupiwijoguxux.pdfIn PDF document text
- https://tolixolosunep.weebly.com/uploads/1/3/4/4/134403343/9855042.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366365/normal_5f92d9898703c.pdfIn PDF document text
- https://rakamukomegu.weebly.com/uploads/1/3/2/6/132681656/9808069.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tadovu/53608869393.pdfIn PDF document text
- https://s3.amazonaws.com/zupenafud/titanic_play_script.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/0962/9096/files/pauls_online_math_notes_differential_equations.pdfIn PDF document text
- https://s3.amazonaws.com/kezemiradigu/84583097046.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0478/3502/1471/files/kijamelajujobibejutowu.pdfIn PDF document text
- https://s3.amazonaws.com/wonoti/past_simple_verbs_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/jiguwuzobozobaz/87228728088.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/0002/0130/files/30497490340.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/2817/0910/files/diagnostic_pathology_of_ovarian_tumors.pdfIn PDF document text
- https://s3.amazonaws.com/wupixufekijax/cahps_survey.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/7971/9330/files/nozapaxuvufubenewuwejip.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c99d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC99D	5392 bytes
SHA-256: `f4cd569a96e22e63905626693c1dbae79bd7675e3f1db4af81202042f2fd9027`
`font_01_sfnt_off0000dbca.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDBCA	11072 bytes
SHA-256: `0c057c85b8a4bab5514fd54c2956e85cb2d864629ba6605e77f4cfb8a3e0cc96`

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