PDF malware analysis — malicious · 5b2e4cc5bec5bcb6

MALICIOUS

PDF

58.4 KB Created: 2020-10-27 22:57:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01

MD5: 5d3b7d3553979bd1295975d2f48558fc SHA-1: d3bf4792bcc3af04d2816ed666b012635b3c18eb SHA-256: 5b2e4cc5bec5bcb63ca851fb242182456ab382304e3ae1d510ee751145b1c40c

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9994

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://ggtraff.ru/strik?keyword=parler+de+la+famille+fle+pdf In PDF document text
- https://cdn-cms.f-static.net/uploads/4368736/normal_5f8ff1ac98216.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374704/normal_5f89f1e85e1e2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366044/normal_5f8b1a31cd0a5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4377380/normal_5f8f4b02e2385.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369783/normal_5f918fe71e4c6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375195/normal_5f94351fe8299.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371786/normal_5f9184d43dd54.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378605/normal_5f8d5219e45a5.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://uploads.strikinglycdn.com/files/16aa7708-fb8e-4211-ac44-a7d826ca9348/divinity_original_sin_enhanced_edition_first_garden.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4fccab75-6796-49be-8376-fa985f286fe4/bigerogekiwukobajazodu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e0d87927-4080-4269-b700-9619b21099ed/barelisapapixegavaw.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d5f8c9ab-1aaf-4b77-a747-2ed71d5424cc/current_voltage_and_resistance_worksheet.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/be4fbf5c-4214-4176-bf87-e2c654d82a6e/64968775686.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/0662/3384/files/wanojabed.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/9508/1635/files/wojabevovaxunevom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/6300/8152/files/flower_shop_job_guide_persona_5.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0507/2735/4528/files/22368522066.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/4987/5104/files/venedinoxojevakanopa.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/7723/1275/files/rubbermaid_roughneck_7x7_shed_assembly_instructions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8937/2329/files/doxuxapukapawawulelidu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/4237/3283/files/52695108473.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4615/1078/files/35132563489.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/17baac36-86d4-44d9-b293-1d2723048fca/98899976067.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/083b377b-bdc8-4f66-a96f-3dcdd0eace8d/fumapixazifipami.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2c114a95-536c-4f35-92fa-8dd0ab4cde81/60590200294.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e237fd52-c8a9-488d-a2ae-cbf3960d19e6/xigorukipemol.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e76bb1b5-bc21-413a-98e1-f82929f0fa55/zupagirokame.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
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007c97.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7C97	5008 bytes
SHA-256: `99ca9b4e48815c410a216a34f25c4e6df56c9fc82a11bdc2a667b8e3b170c138`
`font_01_sfnt_off00008d84.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D84	2884 bytes
SHA-256: `fce08cb36c02190e5234935b5ce96721ec3e58704b0a10ee1e41e1ff4ce6bd48`
`font_02_sfnt_off00009990.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9990	13740 bytes
SHA-256: `85cc4a10afe48e5c08673bc3ce2dec3a6d745dbbfa18878fbcae3aa468280bc4`
`font_03_sfnt_off0000c41f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC41F	16080 bytes
SHA-256: `4862f0796d5cbf2b429715f2b47f15d06f0c641f927a022d27f217f4f39910ad`

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