PDF malware analysis — malicious · 2ea7c7e075165e74

MALICIOUS

PDF

44.9 KB Created: 2020-10-17 22:29:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23

MD5: f678289c96ba9d589c427838ad5c4ce0 SHA-1: 2e0ce8b73e8ee7bf2709bbdbbb52edf0880fdb20 SHA-256: 2ea7c7e075165e744d16d056eac91c5b5e6121e924d86864068f37648681f8fc

162 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a malicious redirector link disguised as a download button, which is a common lure for phishing or malware distribution. The presence of a large number of external PDF links suggests a link farm intended to manipulate search engine results or distribute malicious content. No scripts were extracted, but the document body and heuristics indicate a clear intent to redirect the user to a malicious URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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://ttraff.cc/123?keyword=cross+dj+pro+apk+2020+uptodown In PDF document text
- https://cdn-cms.f-static.net/uploads/4366047/normal_5f86fc5a74f1e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366633/normal_5f88021d4f4ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366375/normal_5f88c0c8d47d5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367959/normal_5f8a6d930319c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4369501/normal_5f882dba53204.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375075/normal_5f89ab2b64b77.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4372377/normal_5f8ac0a726ec0.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4368732/normal_5f89ae430032a.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366036/normal_5f88ba8058cd8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365546/normal_5f8756ac223f7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367941/normal_5f8b3480f33ea.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366365/normal_5f87487a89c14.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/ada5c71b-1534-4ca5-a455-20bb0c150816/nifilutajoxutaxoruzew.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/b678c13e-bb28-41a6-8dcb-fc503021a273/gugaxubuvibikodo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/92f177ea-ac84-41c0-9c83-29e1add29338/zidugupuxozawum.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5395b465-60df-42ee-98c4-efa47c25241a/88985509390.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/d9a0934c-70ce-4c75-8852-e6041745790d/sajixinos.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/679d5454-c132-4c8a-8225-51c50cf91201/cepher_free.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/7f6918d6-699d-46db-beb3-8ac86ea1dc3c/fogofujebufalo.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/0d7318ca-159a-424e-9e86-791151fa47e0/lunonowarupizidosupow.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0493/1551/2479/files/nouns_that_start_with_em.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0483/1431/9012/files/40888690446.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/8712/5910/files/bajokagipegejonag.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/2044/3045/files/bulatezokuzofusata.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_off00006ff3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FF3	5332 bytes
SHA-256: `c8eeeb7009b4e072ad940976e9ce817b30c6dd65c18180e9cc75416b77eb3d43`
`font_01_sfnt_off0000823a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x823A	10524 bytes
SHA-256: `07904dcae25605e8d674bb1ce9c468617a717ea86e1ffbe9dee489ce3df66f8c`

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