PDF malware analysis — malicious · 0dfaa4543bdd9615

MALICIOUS

PDF

153.9 KB Created: 2021-05-30 08:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23

MD5: dd9dc71effe4e4ea4f134f77fdd199dd SHA-1: cfe579e2259f124f145f490829b4dd2b31a498ee SHA-256: 0dfaa4543bdd96155e877684bd3e40a923d2227655f19c56f9141e9bb7206dfa

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs pointing to disposable hosting, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
External URI info PDF_URI

PDF contains an external URL action
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://dugedepap.ru/strik?utm_term=manhattan+8+books+set+for+gre+4th+edition+pdf PDF link annotation
- https://tofikopu.weebly.com/uploads/1/3/1/3/131381225/pozupoki-kawumagewo-zaxuvetabowiz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4454045/normal_60490d88f178d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4484995/normal_603d991acd02e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374185/normal_60692055e89ed.pdfIn PDF document text
- https://xisedemagi.weebly.com/uploads/1/3/2/6/132681548/golinowunuk-reniboli-kixaninofokuza-laniji.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374198/normal_5fe9fe5bafde5.pdfIn PDF document text
- https://lutesikesopisej.weebly.com/uploads/1/3/4/8/134884151/8193172.pdfIn PDF document text
- https://bunikesetula.weebly.com/uploads/1/3/0/7/130739723/1761615.pdfIn PDF document text
- https://zexuboru.weebly.com/uploads/1/3/2/6/132683252/sogixilaw_mokubuxefiwulo.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4414331/normal_601fb59ba4656.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4367294/normal_6067cbfebb178.pdfIn PDF document text
- https://static.s123-cdn-static-d.com/uploads/4393893/normal_60afe2ce70324.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4415745/normal_606455172253e.pdfIn PDF document text
- https://gefozovunipor.weebly.com/uploads/1/3/4/5/134585144/6484191.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4453550/normal_6026d776a6da1.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4403819/normal_5febb3353113d.pdfIn PDF document text
- https://zitavumerut.weebly.com/uploads/1/3/4/4/134465292/3643700.pdfIn PDF document text
- https://jomezafivawig.weebly.com/uploads/1/3/1/8/131856232/bowesimuzule_bevevekoveki_pejexegujazeto.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4450336/normal_606c981496e48.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4490376/normal_60625d31ec509.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4466172/normal_60129a2870211.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001f12b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1F12B	5488 bytes
SHA-256: `2059c8fcea05a28c4c2d39b0b3bb570f96975630856c82ba6eafb14189ea4eda`
`font_01_sfnt_off00020410.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x20410	5764 bytes
SHA-256: `26775462cd291e325820a47f0325e6f4d3093dadbd83562d691510ac928f09f8`
`font_02_sfnt_off000217bb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x217BB	13432 bytes
SHA-256: `953d1c5637a8e456442f3b450d8a368af4488a3b0b4db88a8140fa227158e650`
`font_03_sfnt_off000243d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x243D3	16132 bytes
SHA-256: `e1c0be1f083949b69301fca371b50a13b2e5d6d7a534d85b46ff30d714689a59`

Open this report in the interactive analyzer, or submit your own file for analysis.