PDF malware analysis — malicious · f5c8bc145d6d56fa

MALICIOUS

PDF

37.8 KB Created: 2020-10-29 13:45:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 9711be2d6e930d35eed28c852ceae33d SHA-1: 32f436301ee0440b0715b687b00754b68a98f8b1 SHA-256: f5c8bc145d6d56fa89ea59fab3a3f6b2cac53429488b49c67b62ab01af5bd77f

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The ML classifier also strongly indicated maliciousness. The primary malicious URL is https://cctraff.ru/aws?keyword=bronze+tube+vanilla+wow+stormwind, which is likely used to redirect users to further malicious content or phishing sites. The presence of a large number of external PDF links suggests an attempt to manipulate search engine results or distribute malicious content.

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 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://cctraff.ru/aws?keyword=bronze+tube+vanilla+wow+stormwind In PDF document text
- https://lozulijulejibog.weebly.com/uploads/1/3/1/8/131857057/fudapotal_morasiw_voviluzuxum.pdfIn PDF document text
- https://pinonomobeberex.weebly.com/uploads/1/3/4/3/134318871/wejetajogit.pdfIn PDF document text
- https://narogigadi.weebly.com/uploads/1/3/0/8/130874066/xufevopo.pdfIn PDF document text
- https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/fefeza_jojosara_bezilajap_baxigomewese.pdfIn PDF document text
- https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/3980624.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0486/5274/6920/files/popeyes_cajun_turkey_2020_cooking_instructions.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0434/5357/9430/files/57333066139.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0501/0613/8787/files/psr_e453_owners_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/7125/0333/files/ssc_mts_answer_key.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/0013/5317/files/uc_browser_pc_apk_download_latest_version.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/0110/8421/files/93896760903.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/2331/0260/files/curtis_elementary_school_los_angeles.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0500/1216/0158/files/important_symbols_in_their_eyes_were_watching_god.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0510/3720/8741/files/vosezopifedezixipizekat.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0497/3602/4225/files/xesonaforiso.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2321/8341/files/hoover_self_propelled_windtunnel_manual.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/4489/6412/files/57821342901.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/4726/3131/files/dowagolekulije.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9446/4929/files/oxyfuel_gas_welding.pdfIn PDF document text
- https://s3.amazonaws.com/zedilegol/91369603595.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0463/1134/2242/files/43823037946.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0506/1577/9516/files/dubobokororijunonujuf.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0503/1840/9911/files/best_music_downloader_from_youtube_for_android.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0266/9602/4261/files/14555494010.pdfIn PDF document text
- https://s3.amazonaws.com/kizugokofo/gunuxiparodabobukuviwere.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000053f0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53F0	5364 bytes
SHA-256: `2dab8631aaf77d34186f50d78193e1c62529b6111a172c88669145383d43ea04`
`font_01_sfnt_off00006632.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6632	10380 bytes
SHA-256: `004763e138c1bc6c623fc7d1888aaaa8c334c4b14ccf8838272ac3d3c7d00094`

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