PDF malware analysis — malicious · a93f285f2aa198e1

MALICIOUS

PDF

40.0 KB Created: 2020-10-29 02:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 46ec18db54e68dfcaaa7eb80dc60154e SHA-1: 82dcd7be297ad8ebe7b922c4a3739d192f4b4eec SHA-256: a93f285f2aa198e19369bb76fa80377625a4c24cdccfa4dd8698bfbdcec6a346

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with a critical heuristic firing for a malicious redirector link. The document body, though heavily obfuscated, contains a URL that matches the redirector found in the heuristics. This suggests the PDF is designed to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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=tuxedo+with+tails+for+sale In PDF document text
- https://cdn-cms.f-static.net/uploads/4378843/normal_5f8ac10162414.pdfIn PDF document text
- https://siregudak.weebly.com/uploads/1/3/0/7/130738759/194593.pdfIn PDF document text
- https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/7059084.pdfIn PDF document text
- https://rigafefabapamum.weebly.com/uploads/1/3/4/4/134486683/8602093.pdfIn PDF document text
- https://donibirumot.weebly.com/uploads/1/3/4/4/134463545/6250948.pdfIn PDF document text
- https://mozeduxazos.weebly.com/uploads/1/3/4/0/134018133/jorujovu-zigiz.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4387430/normal_5f9a0c5dc51a2.pdfIn PDF document text
- https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/kufuzijatikuxezigofi.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4374185/normal_5f8e6a566f1ac.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365657/normal_5f87001f5fadd.pdfIn PDF document text
- https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/wovanul_dananilapebe.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4365642/normal_5f95aef4747c5.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://cdn.shopify.com/s/files/1/0496/6891/5353/files/mibonobugap.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8648/8767/files/convert_to_editable_word_document_online.pdfIn PDF document text
- https://s3.amazonaws.com/dusubonifu/moving_to_washington_state_checklist.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/3340/3285/files/onate_high_school_colors.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/5384/9499/files/wodudegemosubegefisifuw.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0436/9865/1289/files/type_of_chemical_reaction_worksheet.pdfIn PDF document text
- https://s3.amazonaws.com/badodemebo/basokutuxipejilagudo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/3071/5288/files/best_fighting_games_android_2020.pdfIn PDF document text
- https://s3.amazonaws.com/wizuluworafid/53188551022.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/0123/2546/files/25619052750.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/4462/4322/files/74975671842.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0439/0515/5227/files/pizufu.pdfIn PDF document text
- https://s3.amazonaws.com/lorifawuvawot/chaupai_sahib_english_translation.pdfIn PDF document text
- https://s3.amazonaws.com/towakog/10844860308.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_off000054e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x54E7	4880 bytes
SHA-256: `5dd907c9cee143adc5a3fca9d4a105a05666380bd6e74bf6bef0dd09de330cc5`
`font_01_sfnt_off000065a2.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65A2	8812 bytes
SHA-256: `1892b2049db3f84103b8a1bd86188a951a4e694cf629f6bb8ee157ddd805ed45`
`font_02_sfnt_off000083dc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x83DC	4324 bytes
SHA-256: `05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176`

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