PDF malware analysis — malicious · 1ea7351ffff4d0d8

MALICIOUS

PDF

53.9 KB Created: 2020-10-28 08:43:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15

MD5: 09f5146ed069556f893ee14796a48562 SHA-1: 2bf08d8bc0b14ccbf40e08bb0c94ac8f3a924a81 SHA-256: 1ea7351ffff4d0d8da1deb929b3678110e71ada7c7fc9505c7f7814cb89c37f6

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Stardew valley community bundles checklist' and the URL 'https://ggtraff.ru/strik?keyword=stardew+valley+community+bundles+checklist', suggesting a lure to a malicious site. The presence of multiple links on disposable hosting further supports a malicious intent, likely to drive traffic to exploit or phishing sites.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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 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://ggtraff.ru/strik?keyword=stardew+valley+community+bundles+checklist In PDF document text
- https://milavigik.weebly.com/uploads/1/3/2/8/132815866/bulodudarexijit.pdfIn PDF document text
- https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/gukivapebapezil_libetukovo_xibobubumi_sikuxuzi.pdfIn PDF document text
- https://jikubefu.weebly.com/uploads/1/3/4/3/134318914/1531552.pdfIn PDF document text
- https://naxizugopigonav.weebly.com/uploads/1/3/1/4/131408516/negowepuw.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4381289/normal_5f926e45872ee.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4409246/normal_5f986c3eb93b4.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4401538/normal_5f9859b9119ef.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371799/normal_5f8b27fa8749f.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4420761/normal_5f975f8f46df3.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393208/normal_5f8e6a0e59035.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4393506/normal_5f965d77c483c.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/1/0496/3562/3076/files/star_wars_jedi_fallen_order_tomb_of_eilram_chests_locations.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/1615/5047/files/45406017980.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0462/3876/1109/files/bis_drinking_water_standards.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/4061/3286/files/satepalusaxufak.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/1accae2f-9835-443b-8589-689a39f52bc1/tv_guide_grand_junction_co.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/83e8386f-8c5a-4473-af12-0b698151b2db/25850353169.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/5e92d57d-a9b7-4e3a-87fc-9b694219bd5e/kugojinemefixewazi.pdfIn PDF document text
- https://s3.amazonaws.com/xanebavifamopez/bobakazifigid.pdfIn PDF document text
- https://s3.amazonaws.com/susopuzupure/mosevujerokenoxufax.pdfIn PDF document text
- https://s3.amazonaws.com/tobobowu/kofusopodod.pdfIn PDF document text
- https://s3.amazonaws.com/buponuwebi/cancer_de_mama_inca_2019.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_off00008283.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8283	5624 bytes
SHA-256: `7a87222c7445b25a3295f478a20138265347e4f9efac78af802993eebe7faf76`
`font_01_sfnt_off00009573.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9573	10828 bytes
SHA-256: `4d46b9158c548cf7cf9dfd297c15eb8464c61e15abbb07908c15c6cbcdcfc1c1`
`font_02_sfnt_off0000b9ac.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB9AC	4324 bytes
SHA-256: `1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e`

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