PDF malware analysis — malicious · aebef8f7fb6bc902

MALICIOUS

PDF

90.1 KB Created: 2020-10-27 05:11:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: d76ed9ba7970362e282e19ece3435a23 SHA-1: d942ca541b8e699354bea2c6f32f24f5b56c956d SHA-256: aebef8f7fb6bc90275c7e7fa7df061649b75ff78a7035376ae225d4f105ff301

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

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, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://cctraff.ru/123?keyword=condo+association+budget+worksheet In PDF document text
- https://cdn-cms.f-static.net/uploads/4384308/normal_5f8c8edb40106.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388040/normal_5f92cf7b1f5e8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4378382/normal_5f8f4fb46a354.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369626/normal_5f88fa2353001.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375351/normal_5f8a349da206b.pdfIn PDF document text
- https://pirizujimo.weebly.com/uploads/1/3/4/4/134454944/f2881caabf29.pdfIn PDF document text
- https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/d3a315e2a9534c.pdfIn PDF document text
- https://wavuvavezexa.weebly.com/uploads/1/3/0/7/130775629/02d0dc.pdfIn PDF document text
- https://sagupegijugix.weebly.com/uploads/1/3/4/4/134443219/poferijotani-rojev-jalisufapelo-gezixibe.pdfIn PDF document text
- https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/jurefabisodiruze.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387808/normal_5f8d8a83a4c7b.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366319/normal_5f872bb2e60b1.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4413016/normal_5f9692b85a8b3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365583/normal_5f95e5723b27f.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/9752/8730/files/17187986666.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0502/9947/0018/files/11145770745.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6041/9989/files/unlock_software_free.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2870/0571/files/18753672551.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/52076946-32d0-45a7-8c9d-e5304c672bbe/nalutafesedapavuxu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/2f1bfe13-792c-4ed3-a04f-566826dda35d/65354299529.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/299845aa-90c9-4c74-b71f-95b83a5ee630/78058036495.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a2b75c1a-1123-40f8-b10e-dc17584b4dd1/wetivozizakajavawibe.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/5328/4008/files/75368078267.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/6621/9941/files/32397752998.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0484/7645/5066/files/short_summary_of_macbeth.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_off000123e5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x123E5	5368 bytes
SHA-256: `c5e6156fd284beb8b40dac08a0d5054ba40770e22ce8245287814550433706df`
`font_01_sfnt_off0001362f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1362F	10556 bytes
SHA-256: `62baa258f9d88533b516ae742e09bcd29fb20e3b616693b2488b4fd65de9c134`

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