PDF malware analysis — malicious · e7d2e35985902ff4

MALICIOUS

PDF

81.5 KB Created: 2021-02-16 07:42:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31

MD5: 289d0cb08c6334046d448322035218e1 SHA-1: f006028677d4b144629ae13efce4978b61a9f5d1 SHA-256: e7d2e35985902ff45b1537b612c0a69f923c6ce23c9076c393bf3443c746b07a

184 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded links, with several pointing to known malicious redirectors and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content, potentially leveraging JavaScript for obfuscation or further redirection.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

Heuristics 5

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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 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.
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://yafferge.ru/infin?keyword=behringer+inuke+nu6000dsp+review In PDF document text
- https://jewefero.weebly.com/uploads/1/3/1/3/131383264/9203199.pdfIn PDF document text
- http://belldiscount.ru/lufiwigisihizhw.pdfIn PDF document text
- http://bestpriceforukraine.xyz/kathmandu_puffer_jacket_size_guidegl0j8.pdfIn PDF document text
- https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/173532.pdfIn PDF document text
- http://luchdobro.site/titanolabapedebulaximiz3wtjh.pdfIn PDF document text
- http://itanah.space/vinobatutajazusjp0h2.pdfIn PDF document text
- https://kipujoguburaza.weebly.com/uploads/1/3/4/3/134321983/1601349.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465557/normal_6015c475a947b.pdfIn PDF document text
- https://fexipipovunozem.weebly.com/uploads/1/3/2/6/132682859/62890b55b.pdfIn PDF document text
- https://wujemalevimovud.weebly.com/uploads/1/3/4/4/134470439/9152088.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4475376/normal_600a0765c95fb.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4411512/normal_600a918831d51.pdfIn PDF document text
- http://gufezonasu.iblogger.org/tixixopizusat.pdfIn PDF document text
- https://cdn.sqhk.co/jakufomego/Yjilia0/costume_stores_open_near_me.pdfIn PDF document text
- http://autoport76.online/educational_psychology_phd_canadaf1rkx.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4410211/normal_5feebd4608fdc.pdfIn PDF document text
- http://netzamka.ru/artificial_intelligence_movie_dual_audio_480ph2hyr.pdfIn PDF document text
- http://mon-compte-cmb.best/wojedozarilufalitines814x.pdfIn PDF document text
- http://itawegan.space/free_hockey_mask_roblox9jbgp.pdfIn PDF document text
- http://svoytrylend.xyz/my_school_bag_coloring_sheetse0duu.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://www.opentle.orgIn PDF document text
- http://ninonasoligu.rf.gd/pronoun_agreement_exercise_1_answers.pdfIn PDF document text
- http://wagulekamiwegur.rf.gd/15176367072.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e2ee.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2EE	5540 bytes
SHA-256: `9b94713b6d95bc90d8bbaa6e1186479d0ca5b9a0d4ac8663e2bc9206e4f3b127`
`font_01_sfnt_off0000f5d6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF5D6	11132 bytes
SHA-256: `92b0745aaabab4c95c77d041d571863370a393bbad971dfda1782aa767f01d69`
`font_02_sfnt_off000115b4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x115B4	10024 bytes
SHA-256: `add0b95334f8757050c784ad1669d6942fb7bdee841178c10bcb4dbdf143d616`

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