PDF malware analysis — malicious · 71ab7290eeeb2b0e

MALICIOUS

PDF

47.9 KB Created: 2020-10-28 08:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 3f87c300110a48835b234d523f72a1cc SHA-1: 9fedccb70a93c892c3a7d01c96f48d4f859c7eda SHA-256: 71ab7290eeeb2b0ed483ed322e0a73e2f30e18caa6821062c46fecd555403512

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The document body, though partially corrupted, contains text that appears to be a lure. The presence of numerous embedded links, many pointing to S3 buckets, suggests a link farm or content distribution network used to host further malicious content or obscure the ultimate destination.

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://ggtraff.ru/strik?keyword=rabbit+showmanship+guide In PDF document text
- https://gerexogevi.weebly.com/uploads/1/3/4/4/134463414/razevaroxokojolufo.pdfIn PDF document text
- https://tuzuwopibas.weebly.com/uploads/1/3/4/3/134316447/zonogufunes-xevuke-dumanuri-zofer.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381320/normal_5f8fc74d13067.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374968/normal_5f99102974bb4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374983/normal_5f8cb7b43e3e9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393190/normal_5f8f18f3539f2.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378157/normal_5f927dc2445bd.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4391605/normal_5f8fa3d6e2961.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4386848/normal_5f8fc05d064f6.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366041/normal_5f8700f792cb5.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/wibadinavosunom/calendario_2018_da_stampare_gratis.pdfIn PDF document text
- https://s3.amazonaws.com/zidosozawok/administration_dfinition.pdfIn PDF document text
- https://s3.amazonaws.com/gujutavevive/mumijadujesu.pdfIn PDF document text
- https://s3.amazonaws.com/nonabafat/audit_report_of_company.pdfIn PDF document text
- https://s3.amazonaws.com/sugaguxagu/bando_fan_belt_catalogue.pdfIn PDF document text
- https://s3.amazonaws.com/libosokune/leadership_capacity_building.pdfIn PDF document text
- https://s3.amazonaws.com/wilugugo/naxogaman.pdfIn PDF document text
- https://s3.amazonaws.com/zetare/91742692134.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/5213/7128/files/jazimupizofexisi.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/7043/7016/files/scientific_notation_day_1_worksheet_answer_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/9778/7035/files/juzowepizez.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/1576/8733/files/rakegusivewufu.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/2335/8888/files/unblocked_games_hacked_500.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_off00006dfb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6DFB	5368 bytes
SHA-256: `c2632343377da84a585db5535d22d3c42c389b9507af7993d89afbc7e50e8fc3`
`font_01_sfnt_off00008022.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8022	10596 bytes
SHA-256: `0edf79d1d60b3e6aa3c0359f57043031cbf12efd6f4e3e08c0ed8de1ad9f392e`
`font_02_sfnt_off0000a416.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA416	4324 bytes
SHA-256: `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`

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