PDF malware analysis — malicious · 8ac857781259c19e

MALICIOUS

PDF

78.1 KB Created: 2020-10-29 06:08:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: d665e9920927c84a1816c864e8ce1416 SHA-1: e945597da7cdbeb7cfd729c7d3525ba680ec0df8 SHA-256: 8ac857781259c19ef1c6f6fa709b80faa621c5564089d5217a3e14cd245337de

174 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. This indicates an attempt to direct users to malicious content, likely for phishing or malware distribution.

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.
Callback phishing phone lure medium SE_CALLBACK_LURE

Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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/123?keyword=mckamy+middle+school+flower+mound+texas In PDF document text
- https://cdn-cms.f-static.net/uploads/4393034/normal_5f99eed42a5d6.pdfIn PDF document text
- https://turikiripejuz.weebly.com/uploads/1/3/4/5/134501804/mudisasegopepi.pdfIn PDF document text
- https://juregirezixo.weebly.com/uploads/1/3/4/4/134401856/sogotabowafu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4388280/normal_5f979a769674d.pdfIn PDF document text
- https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/3029889.pdfIn PDF document text
- https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/pefilomixomamov_rorir_lewekokitezuvu.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370074/normal_5f8dfc3f84fe2.pdfIn PDF document text
- https://juragubiv.weebly.com/uploads/1/3/0/8/130874328/lowat.pdfIn PDF document text
- https://vutizimowunofe.weebly.com/uploads/1/3/4/3/134354130/2772280.pdfIn PDF document text
- https://takijotirodone.weebly.com/uploads/1/3/1/6/131637658/7981901.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://s3.amazonaws.com/fosagoba/xefuk.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/7415/8244/files/irs_form_1040_schedule_5_instructions_2020.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/8327/7491/files/ios_design_guidelines_font_size.pdfIn PDF document text
- https://s3.amazonaws.com/sivanira/88436493967.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0504/1632/0688/files/zesatotugupapevo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/5041/7307/files/words_to_mary_did_you_know_song.pdfIn PDF document text
- https://s3.amazonaws.com/tibanepoxilibud/robuta.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/5025/3979/files/civil_rights_act_1955_for_mppsc.pdfIn PDF document text
- https://s3.amazonaws.com/mubemutolewe/49312929926.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0498/2652/9435/files/13530624078.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0491/9545/0534/files/metodo_de_guitarra_para_principiantes.pdfIn PDF document text
- https://s3.amazonaws.com/dukajevo/vomiwo.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_off0000e2d5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE2D5	5476 bytes
SHA-256: `9d57fb3c4829abce7701a3bd8c4a032f94031e179dda4a9129e50ac4733aa67d`
`font_01_sfnt_off0000f569.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF569	11760 bytes
SHA-256: `e63717b1f3442b3398fd36a9f408047656485359c54b75bdb466353985bf4a0c`
`font_02_sfnt_off00011c5c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11C5C	4324 bytes
SHA-256: `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`

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