PDF malware analysis — malicious · 66dc53008341c027

MALICIOUS

PDF

46.4 KB Created: 2020-10-25 18:59:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-28

MD5: ea4a9c3420edaea613d73d3bef0ab5ac SHA-1: 50adb3920624ffb9502462f22b25911b267c2202 SHA-256: 66dc53008341c02736a7f153f8e5ec64af18938e4f34b33506823200664fadbf

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various platforms, suggesting a link farm or SEO poisoning attempt. One prominent URL, https://cctraff.ru/aws?keyword=apparel+manufacturing+handbook+jacob+solinger+pdf, is flagged as a malicious redirector. The ML classifier also strongly indicated maliciousness.

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=apparel+manufacturing+handbook+jacob+solinger+pdf In PDF document text
- https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/f6a1408b444df4.pdfIn PDF document text
- https://kejedaxuz.weebly.com/uploads/1/3/4/3/134355680/gozetiv_runepitaxulum.pdfIn PDF document text
- https://jofetafoba.weebly.com/uploads/1/3/4/4/134485710/moriparululipo-danigomokiw-vabewateweduz.pdfIn PDF document text
- https://jimigafekalese.weebly.com/uploads/1/3/1/4/131407537/a5da8a74.pdfIn PDF document text
- https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/metavon_runokip_fisezefidiwade_kujis.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/1/0494/8901/9039/files/melofanibikaxux.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0499/2162/2184/files/65590314674.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/6976/7321/files/beauty_and_the_beast_auditions_near_me_2019.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0433/4449/4760/files/tisewubezo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0482/2070/0824/files/download_of_rapidex_english_speaking_course.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0479/1825/2198/files/nuraxolebusolalazuwiguv.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0496/2507/1765/files/pazevidowutaramefuzalup.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0268/8991/2491/files/fagizinasijaxepulu.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bb4f4b0f-3f31-442f-ba26-7913a1f41126/smash_flash_unblocked_games.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a4a066ac-f37d-4b93-8a24-22ac7e841f60/72402039267.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a331f25e-444c-479e-a2fe-b03da7bcb24a/wedanevudawutugep.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/a905b57b-5322-4a84-b8c7-f5ff3475e2aa/rome_total_war_2_guide.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/46c402fb-a1a1-4059-8058-dc5676967c60/table_topics_toastmasters_ideas.pdfIn PDF document text
- https://s3.amazonaws.com/wisuw/lopressor_davis_drug.pdfIn PDF document text
- https://s3.amazonaws.com/kavitokolezub/algorithmic_trading_chan.pdfIn PDF document text
- https://s3.amazonaws.com/pusolefosex/lspdfr_force_callout_key.pdfIn PDF document text
- https://s3.amazonaws.com/kizugokofo/design_e_comunicao_visual_bruno_munari_download.pdfIn PDF document text
- https://s3.amazonaws.com/xisefowu/bochenek_repetytorium.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_off00006650.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6650	5720 bytes
SHA-256: `b40e8d42ebd0ea4ec3920c41fefa8bf1a6aa2aa4f5491ede75b024db204d2a7b`
`font_01_sfnt_off00007989.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7989	10848 bytes
SHA-256: `e9046c39a8c13c34cf1fb88c86b1e6f905c871b1af35c95eaf9a8c608befd336`
`font_02_sfnt_off00009d90.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9D90	4324 bytes
SHA-256: `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`

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